Publications
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"Polar covalent apex-base bonding in borapyramidanes probed by solid-state NMR and DFT calculations", D. J. Luder, N. Terefenko, Q. Sun, H. Eckert, C. Mück-Lichtenfeld, G. Kehr, G. Erker, T. Wiegand, Chem. Eur. J. 2024, 30, e202303701. doi: 10.1002/chem.202303701
"Bora-alkenes: Metal Coordination and Reactions with BH-boranes", C. Chen, C. G. Daniliuc, G. Kehr, G. Erker, Chem. Eur. J. 2023, 29, e202301044. doi: 10.1002/chem.202301044
"The B=C bond: some recent developments", C. Chen, G. Kehr, G. Erker, Org. Chem. Front. 2023, 10, 4161-4166. doi: 10.1039/d3qo00796k
"Molecular pyramids - from tetrahedranes to [6]pyramidanes", Q. Sun, C. Mück-Lichtenfeld, G. Kehr, G. Erker, Nat. Rev. Chem. 2023, 7, 732-746. doi: 10.1038/s41570-023-00525-7
"Boraalkenes Made by a Hydroboration Route: Cycloaddition and B=C Bond Cleavage Reactions", X. Jie, C. Chen, C. G. Daniliuc, G. Kehr, G. Erker, Angew. Chem. 2023, 135, e202214700; Angew. Chem. Int. Ed. 2023, 62, e202214700. doi: 10.1002/anie.202214700
"Proton-phosphorus connectivities revealed by high-resolution proton-detected solid-state NMR", A. A. Malär, Q. Sun, J. Zehnder, G. Kehr, G. Erker, T. Wiegand, Phys. Chem. Chem. Phys. 2022, 24, 7768-7778. doi: 10.1039/d2cp00616b
"Generation of Boryl-nitroxide Radicals from a Boraalkene via the Nitroso Ene Reaction" C. Chen, C. G. Daniliuc, S. Klabunde, M. R. Hansen, G. Kehr, G. Erker, Chem. Sci. 2022, 13, 10891-10896. doi: 10.1039/D2SC02485C
"Formation of a Hybrid 1-Bora-3-boratabenzene Heteroarene Anion Derivative" Q. Sun, C. G. Daniliuc, C. Mück-Lichtenfeld, G. Kehr, G. Erker, Angew. Chem. 2022, 134, e202205565; Angew. Chem. Int. Ed. 2022, 61, e202205565. doi:10.1002/anie.202205565
"A deprotonation pathway to reactive [B]CH2 boraalkenes" K. Škoch, C. Chen, C. G. Daniliuc, G. Kehr, G. Erker, Dalton Trans., 2022, 51, 7695-7704. doi:10.1039/D2DT01193J
"Borole/Borapyramidane Relationship" Q. Sun, C. G. Daniliuc, X. Yu, C. Mück-Lichtenfeld, G. Kehr, G. Erker, J. Am. Chem. Soc. 2022. 144, 7815-7821. doi:10.1021/jacs.2c01727
"Stereochemical Behavior of Pairs of P-stereogenic Phosphanyl Groups at the Dimethylxanthene Backbone" K. Škoch, C. G. Daniliuc, M. Müller, S. Grimme, G. Kehr, G. Erker, Chem. Eur. J. 2022, 28, e202200248. doi:10.1002/chem.202200248.
"An Olefin-based Multi-component Reaction to 1,2-Azaborolidine Derivatives" J. Li, C. G. Daniliuc, G. Kehr, G. Erker, Dalton Trans., 2022, 51, 1775-1778. doi:10.1039/D1DT04337D.
"Substituent dependent cyclization reactions of 1,1'-bis(alkynyl) ferrocenes with the (C6F5)BH2·SMe2 hydroboration reagent" K. Škoch, C. G. Daniliuc, G. Kehr, G. Erker, Eur. J. Inorg. Chem. 2022, 2022, e202100838. doi:10.1002/ejic.202100838.
[This article also appears in: Ferrocene Chemistry Society Volumes: Czech Republic]
“N-Heterocyclic Carbene Stabilized 1-Bora-1,3-butadienes” C. Chen, C. G. Daniliuc, G. Kehr, G. Erker, J. Am. Chem. Soc. 2021, 143, 21312–21320. doi:10.1021/jacs.1c09774.
"Three-component Reaction to 1,4,2-Diazaborole-type Heteroarene Systems" J. Li, C. G. Daniliuc, G. Kehr, G. Erker, Angew. Chem. 2021, 133, 27259-27267. doi:10.1002/ange.202111946; "Three-component Reaction to 1,4,2-Diazaborole-type Heteroarene Systems" J. Li, C. G. Daniliuc, G. Kehr, G. Erker, Angew. Chem. Int. Ed. 2021, 60, 27053-27061. doi:10.1002/anie.202111946.
"Ring Construction by 1,1-Carboboration; Making Anthracene Derivatives from a Tetra(alkynyl)benzene" R.Liedtke, S. Surmiak, X. Jie, C. G. Daniliuc, G. Kehr, G. Erker, Helv. Chim. Acta. 2021, 104, e2100149d. doi:10.1002/hlca.202100149.
"Carbon Monoxide Coupling Reactions via a Frustrated Lewis Pair-Derived η2-Formyl Borane" Q. Sun, C. G. Daniliuc, K. Bergander, G. Kehr, and G. Erker* J. Am. Chem. Soc. 2021. 143, 14992–14997. doi:10.1021/jacs.1c07465.
"Bis(η6-benzene)lithium Cation, a Fundamental Main Group Organometallic Species" X. Jie, J. Li, C. G. Daniliuc, A.-L. Wübker, M. R. Hansen, H. Eckert, C. Mück-Lichtenfeld, G. Kehr, G. Erker, Angew. Chem. 2021, 133, 23061-23066. doi: 10.1002/ange.202108376; "Bis(η6-benzene)lithium Cation, a Fundamental Main Group Organometallic Species" X. Jie, J. Li, C. G. Daniliuc, A.-L. Wübker, M. R. Hansen, H. Eckert, C. Mück-Lichtenfeld, G. Kehr, G. Erker, Angew. Chem. Int. Ed. 2021, 60, 22879-22884. doi: 10.1002/anie.202108376.
"Formation and Cycloaddition Reactions of a Reactive Boraalkene Stabilized Internally by N-Heterocyclic Carbene", C. Chen, C. G. Daniliuc, G. Kehr, G. Erker, Angew. Chem. 2021, 133, 20058-20064. doi: 10.1002/ange.202106724; "Formation and Cycloaddition Reactions of a Reactive Boraalkene Stabilized Internally by N-Heterocyclic Carbene", C. Chen, C. G. Daniliuc, G. Kehr, G. Erker, Angew. Chem. Int. Ed. 2021, 60, 19905-19911. doi: 10.1002/anie.202106724
"Multi-component Synthesis of Dihydro-1,3-azaborinine Derived Oxindole Isosteres" J. Li, C. G. Daniliuc, J. Matern, G. Fernández, G. Kehr, and G. Erker, Chem. Commun. 2021, 57, 7689-7692. doi: 10.1039/D1CC02557K
"Frustrated Lewis Pair Neighbors at the Xanthene Framework: Epimerization at Phosphorus and Cooperative Formation of Macrocyclic Adduct Structures" K. Škoch, C. G. Daniliuc, G. Kehr, S. Ehlert, M.Müller, S. Grimme, G. Erker, Chem. Eur. J. 2021, 27, 12104-12114. DOI:10.1002/chem.202100835
"Formation of Amidino-borate Derivatives by a Multi-component Reaction" J. Li, C. G. Daniliuc, G. Kehr, and G. Erker, Org. Biomol. Chem. 2021. 19, 5551-5554. DOI:10.1039/D1OB00775K
"FLP Reduction of Carbon Monoxide and Related Reactions" T. Wang, C. G. Daniliuc, G. Kehr, G. Erker. in J. C. Slootweg, A. R. Jupp (eds.) “Frustrated Lewis Pairs”, Molecular Catalysis 2, 2021, 87-112 doi: 10.1007/ 978-3-030-58888-5.
"Reaction of carbon oxides with an ethylene-bridged PH/B Lewis pair" Q. Sun, C. G Daniliuc, G. Kehr, G. Erker, Dalton Trans. 2021, 50, 3523-3528. Doi: 10.1039/D1DT00459J.
"Introducing the Dihydro-1,3-azaboroles: Convenient Entry by a Three-Component Reaction, Synthetic and Photophysical Application" J. Li, C. G. Daniliuc, K. K. Kartha, G. Fernández, G. Kehr, and G. Erker, J. Am. Chem. Soc. 2021, 143, 2059-2067. doi: 10.1021/jacs.0c12236.
"Alkyne 1,1‐Hydroboration to a Reactive Frustrated P/B‐H Lewis Pair", K. Škoch, C. G Daniliuc, G. Kehr, G. Erker, Angew. Chem. 2021, 133, 6831-6837. doi: 10.1002/ange.202014562; "Alkyne 1,1‐Hydroboration to a Reactive Frustrated P/B‐H Lewis Pair", K. Škoch, C. G Daniliuc, G. Kehr, G. Erker, Angew. Chem. Int. Ed. 2021, 60, 6757-6763. doi: 10.1002/anie.202014562.
"A BH Borenium-Derived Thioxoborane, Its Persulfide, and Their Li+-Induced Reactions with Alkynes and with Carbon Dioxide", C. Chen, C. G Daniliuc, C. Mück-Lichtenfeld, G. Kehr, G. Erker, J. Am. Chem. Soc. 2020, 142, 19763-19771. doi: 10.1021/jacs.0c10078
"Reductive Cleavage of the CO Molecule by a Reactive Vicinal Frustrated PH/BH Lewis Pair", Q. Sun, C. G Daniliuc, C. Mück-Lichtenfeld, K. Bergander, G. Kehr, G. Erker, J. Am. Chem. Soc. 2020, 142, 17260-17264. doi: 10.1021/jacs.0c07161
"Using the FpXylBH2 SMe2 Reagent for the Regioselective Synthesis of Cyclic Bis(alkenyl)boranes", K. Škoch, C. G Daniliuc, G. Kehr, G. Erker, Chem. Commun. 2020, 56, 12178-12181. doi: 10.1039/D0CC05230B
"The [(NHC)B(H)C6F5]+ Cations and their [B](H)-CO Borane Carbonyls", C. Chen, J. Li, C. G. Daniliuc, C. Mück-Lichtenfeld, G. Kehr, G. Erker, Angew. Chem. 2020 , 132, 21644-21648. doi: 10.1002 / ange.202009353; "The [(NHC)B(H)C6F5]+ Cations and their [B](H)-CO Borane Carbonyls", C. Chen, J. Li, C. G. Daniliuc, C. Mück-Lichtenfeld, G. Kehr, G. Erker, Angew. Chem. Int. Ed. 2020, 59, 21460-21464. doi: 10.1002 / anie.202009353
"Solid-State NMR Techniques for the Structural Characterization of Cyclic Aggregates Based on Borane-Phosphane Frustrated Lewis Pairs", R. Knitsch, M. Brinkkötter, T. Wiegand, G. Kehr, G. Erker, MR Hansen, H. Eckert, Molecules 2020, 25, 1400. doi: 10.3390 / molecules25061400
"Cyclobutene Formation by Borane Catalyzed [2 + 2] Cycloaddition of a Vinylphosphane with Conjugated Ynones", X. Tao, MM Gruber, C. G Daniliuc, C. Mück-Lichtenfeld, G. Kehr, G. Erker, Eur. J. Inorg. Chem. 2020 , 2270-2272. doi: 10.1002 / ejic.202000293
"A rare olefin 1,1-carboboration reaction opens a synthetic pathway to an unusually structured frustrated Lewis pair", C. Chen, C. G Daniliuc, C. Mück-Lichtenfeld, G. Kehr, G. Erker, Chem. Commun . 2020 , 56 , 8806-8809. doi: 10.1039 / d0cc01255f .
"Reaction of an anionic chelate phosphane / borata-alkenes ligand with [Rh (nbd) Cl] 2 , [Rh (CO) 2 Cl] 2 and [Ir (cod) Cl] 2 ", K. Watanabe, A. Ueno, X Tao, K. Škoch, X. Jie, S. Vagin, B. Rieger, CG Daniliuc, M. Letzel, G. Kehr, G. Erker, Chem. Sci . 2020 , 11 , 7349-7355. doi: 10.1039 / d0sc02223c
"Using the Secondary PH / BH Functional Groups of an Active Geminal Frustrated Lewis Pair for Carbon Monoxide Reduction and Reaction with Nitriles and Isonitriles", J. Li, C. Mück-Lichtenfeld, CG Daniliuc, G. Kehr, G. Erker, Angew . Chem . 2020 , 132 , 12577-12583. doi: 10.1002 / anie.202000612 ; "Using the Secondary PH / BH Functional Groups of an Active Geminal Frustrated Lewis Pair for Carbon Monoxide Reduction and Reaction with Nitriles and Isonitriles", J. Li, C. Mück-Lichtenfeld, CG Daniliuc, G. Kehr, G. Erker, Angew . Chem. Int. Ed . 2020 , 59 , 12477-12483. doi: 10.1002 / anie.202000612
"Borane-induced ring closure reaction of oligomethylene-linked bis-allees", X. Tao, K. Škoch, C. G Daniliuc, G. Kehr, G. Erker, Chem. Sci . 2020 , 11 , 1542-1548. doi: 10.1039 / c9sc03870a
"Borane-Mediated Vinylphosphane Cycloaddition to Conjugated Ynones" J. Li, C. G Daniliuc, G. Kehr, G. Erker, Eur. J. Inorg. Chem . 2020 , 1096-1100. (VIP) Doi: 10.1002 / ejic.201901085 .
"Cycloaddition reactions of an active cyclic phosphane / borane pair with alkenes, alynes and carbon dioxide." X. Jie, Q, Sun, C. G Daniliuc, R. Knitsch, MR Hansen, H. Eckert, G. Kehr, G. Erker, Chem. Eur. J. 2020 , 26 , 1269-1273. Doi: 10.1002 / chem . 201905171 .
"Formation of Active Cyclic Five-membered Frustrated Phosphane / Borane Lewis Pairs and their Cycloaddition Reactions" S. Dong, CG Daniliuc, G. Kehr, G. Erker, Chem. Eur. J. 2020 , 26, 745-753. Doi: 10.1002 / chem . 201904919 .
"The XB (C 6 F 5 ) 2 Halogenoborane Route to Phosphole Derivatives" J. Moericke, A. Ueno, B. Wibbeling, CG Daniliuc, G. Kehr, G. Erker, Eur. J. Inorg. Chem . 2019 , 2912-2917. (VIP) Doi: 10.1002 / ejic.201900505 .
"Diels-Alder route to norbornane derived vicinal phosphane / borane frustrated Lewis pairs for the metal-free catalytic hydrogenation of α, β-unsaturated ketones" C. Wölke, CG Daniliuc, G. Kehr, G. Erker, J. Organomet. Chem . 2019 , 899 , 120879. DOI: j.jorganchem.2019.120879
"Dihydrogen splitting by intramolecular borane-phosphane frustrated Lewis pair: A comprehensive characterization strategy using solid state NMR and DFT calculations" R. Knitsch, T. Özgün, G.-Q. Chen, G. Kehr, G. Erker, M. R. Hansen, H. Eckert, Chemphyschem 2019, 20, 1837-1849. DOI: 10.1002/cphc.201900406.
"Carbon-carbon bond forming reactions of acetylenic esters and ketones within frustrated phosphane/borane Lewis pair frameworks." L. Wang, J. Li, D. Deng, C. G. Daniliuc, C. Mück-Lichtenfeld, G. Kehr, G. Erker, Dalton Trans. 2019, 48, 11921-11926. DOI: 10.1039/c9dt02624j.
"Multi-component Synthesis of Rare 1,3-Dihydro-1,3-azaborinine Derivatives-Application of a Bora-Nazarov Type Reaction." J. Li, C. G. Daniliuc, C. Mück-Lichtenfeld, G. Kehr, G. Erker, Angew. Chem. 2019, 131, 15521-15524. doi: 10.1002/ange.201909530. "Multi-component Synthesis of Rare 1,3-Dihydro-1,3-azaborinine Derivatives-Application of a Bora-Nazarov Type Reaction." J. Li, C. G. Daniliuc, C. Mück-Lichtenfeld, G. Kehr, G. Erker, Angew. Chem. Int. Ed. 2019, 58, 15377-15380. doi:10.1002/anie.201909530.
"Arylallenes and the halogeno-B(C6F5)2 reagents: facile formation of 2-borylindenes." X. Tao, C. G. Daniliuc, K. Soloviova, C. A. Strassert, G. Kehr, G. Erker, Chem. Commun. 2019, 55, 10166-10169. doi:10.1039/C9CC04199K.
"Macrocycle Formation by Cooperative Selection at a Double-Sited Frustrated Lewis Pair." L. Wang, D. Deng, K. Škoch, C. G. Daniliuc, G. Kehr, G. Erker, Organometallics, 2019, 38, 1897-1902. (Cover of the issue) doi: 10.1021/acs.organomet.9b00002.
"Preparation of the Borane (Fmes)BH2 and its Utilization in the FLP Reduction of Carbon Monoxide and Carbon Dioxide", J. Li, C. G. Daniliuc, G. Kehr, G. Erker, Angew. Chem. 2019, 131, 6809-6813. doi:10.1002/ange.201901634. "Preparation of the Borane (Fmes)BH2 and its Utilization in the FLP Reduction of Carbon Monoxide and Carbon Dioxide", J. Li, C. G. Daniliuc, G. Kehr, G. Erker, Angew. Chem. Int. Ed. 2019, 58, 6737-6741. doi:10.1002/anie.201901634.
"Unsaturated vicinal frustrated phosphane/borane Lewis pairs as ligands in gold(I) chemistry", A. Ueno, K. Watanabe, C. G. Daniliuc, G. Kehr, G. Erker, Chem. Commun., 2019, 55, 4367-4370. doi: 10.1039/c9cc01136f.
"Consecutive intermolecular 1,1-carboboration reactions of Me3Si-substituted alkynes with the halogeno-B(C6F5)2 reagents", K. Škoch, C. Pauly, C. G. Daniliuc, G. Kehr, G. Erker, Dalton Trans., 2019, 48, 4837-4845.doi: 10.1039/c9dt00413k.
"Aggregation Behavior of a Six-Membered Cyclic Frustrated Phosphane/Borane Lewis Pair: Formation of a Supramolecular Cyclooctameric Macrocyclic Ring System", X. Jie, C. G. Daniliuc, R. Knitsch, M. R. Hansen, H. Eckert, S. Ehlert, S. Grimme, G. Kehr, G. Erker, Angew. Chem. 2019, 131, 892-896. doi: 10.1002/ange.201811873; "Aggregation Behavior of a Six-Membered Cyclic Frustrated Phosphane/Borane Lewis Pair: Formation of a Supramolecular Cyclooctameric Macrocyclic Ring System", X. Jie, C. G. Daniliuc, R. Knitsch, M. R. Hansen, H. Eckert, S. Ehlert, S. Grimme, G. Kehr, G. Erker, Angew. Chem. Int. Ed. 2019, 58, 882-886. doi: 10.1002/anie.201811873.
"Halogenoborane mediated allene cyclooligomerization", X. Tao, C. Wölke, C. G. Daniliuc, G. Kehr, G. Erker, Chem. Sci. 2019, 10, 2478-2482. doi: 10.1039/c8sc04790a.
"The Taming of Redox-Labile Phosphidotitanocene Cations", A. T. Normand, Q. Bonnin, S. Brandès, P. Richard, P. Fleurat-Lessard, C. Devillers, C. Balan, P. Le Gendre, G. Kehr, G. Erker, Chem. Eur. J. 2019, 25, 2803-2815. doi: 10.1002/chem.201805430.
"Developing carbon Lewis base/boron Lewis acid frustrated Lewis pair chemistry derived from conjugated dienamines", J. Möricke, F. Rehwinkel, T. Danelzik, C. G. Daniliuc, B. Wibbeling, G. Kehr, G. Erker, Tetrahedron 2019, 75, 571-579. doi: 10.1016/j.tet.2018.11.068.
"Characterization of H2-splitting products of Frustrated Lewis Pairs: The benefit of fast magic-angle spinning", A. A. Malär, S. Dong, G. Kehr, G. Erker, B. H. Meier, T. Wiegand, ChemPhysChem 2019, 20, 672-679. doi: 10.1002/cphc.201900006.
"Solid state frustrated Lewis pair chemistry", L. Wang, G. Kehr, C. G. Daniliuc, M. Brinkkötter, T. Wiegand, A.-L. Wübker, H. Eckert, L. Liu, J. G. Brandenburg, S. Grimme, G. Erker, Chem. Sci. 2018, 9, 4859-4865. doi: 10.1039/c8sc01089g.
"Formation and reactions of active five-membered phosphane/borane frustrated Lewis pair ring systems", S. Dong, L. Wang, T. Wang, C. G. Daniliuc, M. Brinkkötter, H. Eckert, G. Kehr, G. Erker, Dalton Trans. 2018, 47, 4449-4454. doi: 10.1039/c8dt00672e.
"Formation of macrocyclic ring systems by carbonylation of trifunctional P/B/B frustrated Lewis pairs", L. Wang, S. Dong, C. G. Daniliuc, L. Liu, S. Grimme, R. Knitsch, H. Eckert, M. R. Hansen, G. Kehr, G. Erker, Chem. Sci. 2018, 9, 1544-1550. doi: 10.1039/c7sc04394e.
"Formation of Reactive π-Conjugated Frustrated N/B Pairs by Borane-Induced Propargyl Amine Rearrangement", T. Wang, C. G. Daniliuc, C. Mück-Lichtenfeld, G. Kehr, G. Erker, J. Am. Chem. Soc. 2018, 140, 3635-3643. doi: 10.1021/jacs.7b11958.
"Metal-Free Carbonylation Route to a Reactive Borataepoxide System", T. Wang, G. Kehr, C. G. Daniliuc, G. Erker, Organometallics 2018, 37, 1040-1049. doi: 10.1021/acs.organomet.8b00035.
"Selective formation of heterocyclic trans-cycloalkenes by alkyne addition to a biphenylene-based phosphane/borane frustrated Lewis pair", J. Li, C. G. Daniliuc, G. Kehr, G. Erker, Chem. Commun. 2018, 54, 6344-6347. doi: 10.1039/c8cc03369b.
"Experimental charge density study on FLPs and a FLPs and a reaction product", C. J. Schürmann, R. Herbst-Irmer, T. L. Teuteberg, D. Kratzert, G. Erker, R. A. Mata, D. Stalke, Z. Kristallogr. 2018, 233, 723-731. doi: org/10.1515/zkri-2018-2061.
"Zirconocene mediated acetylboron chemistry", Z. Jian, C. G. Daniliuc, G. Kehr, G. Erker, Chem. Commun. 2018, 54, 5724-5727. doi: 10.1039/c8cc02680g.
"Formation of borata-alkene/iminium zwitterions by ynamine hydroboration", L. Wang, Z. Jian, C. G. Daniliuc, G. Kehr, G. Erker, Dalton Trans. 2018, 47, 10853-10856. doi: 10.1039/c8dt02435a.
"The Borole Route to Reactive Pentafluorophenyl-Substituted Diboranes(4)", F. Ge, X. Tao, C. G. Daniliuc, G. Kehr, G. Erker, Angew. Chem. 2018, 130, 14778-14782. doi: 10.1002/ange.201807743; "The Borole Route to Reactive Pentafluorophenyl-substituted Diboranes(4)", F. Ge, X. Tao, C. G. Daniliuc, G. Kehr, G. Erker, Angew. Chem. Int. Ed. 2018, 57, 14570-14574. doi: 10.1002/anie.201807743.
"Metal-free Acetylene Coupling by the (C6F5)2B-X 1,2-Halogenoboration Reaction", A. Ueno, J. Li, C. G. Daniliuc, G. Kehr, G. Erker, Chem. Eur. J. 2018, 24, 10044-10048. doi: 10.1002/chem.201802084.
"The special role of B(C6F5)3 in the single electron reduction of quinones by radicals", X. Tao, C. G. Daniliuc, R. Knitsch, M. R. Hansen, H. Eckert, M. Lübbesmeyer, A. Studer, G. Kehr, G. Erker, Chem. Sci. 2018, 9, 8011-8018. doi: 10.1039/c8sc03005g.
"A Route toward (Aminomethyl)cyclopentadienide Ligands and Their Group 4 Metal Complexes", Q. Bonnin, S.-Y. Wong, C. Balan, V. Comte, R. Malacea, M.-J. Penouilh, P. Richard, G. Kehr, A. T. Normand, G. Erker, P. L. Gendre, Eur. J. Inorg. Chem. 2018, 3813–3821. doi: 10.1002/ejic.201800636.
"A convenient route to internally phosphanestabilized aryltriborane(7) compounds", J. Li, C. G. Daniliuc, G. Kehr, G. Erker, Chem. Commun. 2018, 54, 12606-12609. doi: 10.1039/c8cc06728g.
"Unusual 1,1-Hydroboration Route to a Reactive Unsaturated Vicinal Frustrated Phosphane/Borane Lewis Pair", A. Ueno, X. Tao, C. G. Daniliuc, G. Kehr, G. Erker, Organometallics 2018, 37, 2665−2668. doi: 10.1021/acs.organomet.8b00481.
"Borane-Induced Dimerization of Arylallenes", X. Tao, C. G. Daniliuc, D. Dittrich, G. Kehr, G. Erker, Angew. Chem. 2018, 130, 14118–14122. doi: 10.1002/ange.201808436; "Borane-Induced Dimerization of Arylallenes", X. Tao, C. G. Daniliuc, D. Dittrich, G. Kehr, G. Erker, Angew. Chem. Int. Ed. 2018, 57, 13922–13926. doi: 10.1002/anie.201808436.
"Phosphirenium borate betaines from alkynylphosphanes and the halogeno-B(C6F5)2 reagents", A. Ueno, J. Möricke, C. G. Daniliuc, G. Kehr, G. Erker, :Chem. Commun. 2018, 54, 13746-13749. doi: 10.1039/c8cc07189f.
"Utilizing the TEMPO Radical in Zirconocene Cation and Hydrido Zirconocene Chemistry", Y.-L. Liu, G. Kehr, C. G. Daniliuc, G. Erker, Organometallics 2017, 36, 3407-3414. doi: 10.1021/acs.organomet.7b00558.
"Stoichiometric and catalytic isomerization of alkenylboranes using bulky Lewis bases", F. A. Tsao, A. Sathaseevan, H. Zhu, S Grimme, G. Erker, D. W. Stephan, Chem. Commun. 2017, 53, 9458-9461. doi: 10.1039/c7cc04904h.
"Making Use of the Functional Group Combination of a Phosphane/Borane Lewis Pair Connected by an Unsaturated Four-Carbon Bridge", G.-Q. Chen, C. G. Daniliuc, G. Kehr, G. Erker, Eur. J. Inorg. Chem. 2017, 4519–4524. doi: 10.1002/ejic.201700570.
"Reduction of Dioxygen by Radical/B(C6F4X)3 Pairs to Give Isolable Bis(borane) Superoxide Compounds", X. Tao, C. G. Daniliuc, O. Janka, R. Pöttgen, R. Knitsch, M. R. Hansen, H. Eckert, M. Lübbesmeyer, A. Studer, G. Kehr, G. Erker, Angew. Chem. 2017, 129, 16868-16871 doi: 10.1002/ange.201709309; "Reduction of Dioxygen by Radical/ B(C6F4X)3 Pairs to Give Isolable Bis(borane)superoxide Compounds", X. Tao, C. G. Daniliuc, O. Janka, R. Pöttgen, R. Knitsch, M. R. Hansen, H. Eckert, M. Lübbesmeyer, A. Studer, G. Kehr, G. Erker, Angew. Chem. Int. Ed. 2017, 56, 16641-16644 doi: 10.1002/anie.201709309.
"Frustrated Lewis Pair Behavior of an Open, Noninteracting Phosphane/Borane Pair at a Rigid Organic Framework: Exploring Decisive Factors for FLP Acitivity", K.-Y. Ye, C. G. Daniliuc, S. Dong, G. Kehr, G. Erker, Organometallics 2017, 36, 5003-5012. doi: 10.1021/acs.organomet.7b00819.
"Phosphine-Borane Frustrated Lewis Pairs Derived from a 1,1’-Disubstituted Ferrocene Scaffold: Synthesis and Hydrogenation Catalysis ", Z. Jian, S. Krupski, K. Škoch, G. Kehr, C. G. Daniliuc, I. Císařová, P. Štěpnička, G. Erker, Organometallics 2017, 36, 2940-2946. doi: 10.1021/acs.organomet.7b00363.
"Borata-Wittig olefination reactions of ketones, carboxylic esters and amides with bis(pentafluorophenyl)-borata-alkene reagents", T. Wang, S. Kohrt, C. G. Daniliuc, G. Kehr, G. Erker, Org. Biomol. Chem. 2017, 15, 6223-6232. doi: 10.1039/c7ob01591g.
"A hydroboration route to geminal P/B frustrated Lewis pairs with a bulky secondary phosphane component and their reaction with carbon dioxide", Z. Jian, G. Kehr, C. G. Daniliuc, B. Wibbeling, G. Erker, Dalton Trans. 2017, 46, 11715-11721. doi: 10.1039/c7dt02315d.
"Metal-Free Arene and Heteroarene Borylation Catalysed by Strongly Electrophilic Bis-boranes", Y.-L. Liu, G. Kehr, C. G. Daniliuc, G. Erker, Chem. Eur. J. 2017, 23, 12141-12144. doi: 10.1002/chem.201701771.
"Selective Metal-free HB(C6F5)2 Catalyzed Allene Cyclotrimerization: Formation of 1,3,5-Trimethylenecyclohexane and Its Trishydroboration Product", X. Tao, G. Kehr, C. G. Daniliuc, G. Erker, Angew. Chem. 2017, 129, 1396-1400. doi: 10.1002/ange.201610530. "Selective Metal-free HB(C6F5)2 Catalyzed Allene Cyclotrimerization: Formation of 1,3,5-Trimethylenecyclohexane and Its Trishydroboration Product", X. Tao, G. Kehr, C. G. Daniliuc, G. Erker, Angew. Chem. Int. Ed. 2017, 56, 1376-1380. doi: 10.1002/anie.201610530.
"Frustrated Lewis Pair Chemistry: Searching for New Reactions", G. Kehr, G. Erker, Chem. Rec. 2017, 17, 803-815. 10.1002/tcr.201700010.
"The Tris(pentafluorophenyl)borane-Catalyzed Reaction of Phosphorus/Boron and Nitrogen/Boron Frustrated Lewis Pair Dihydrogen Activation Products with Alkenes and Alkynes", T. Wang, X. Jentgens, C. G. Daniliuc, G. Kehr, G. Erker, ChemCatChem. 2017, 9, 651-658. doi: 10.1002/cctc.201601229.
"Reactions of strongly electrophilic alkenyl(pentafluorophenyl)boranes with the TEMPO Radical", X. Tao, F. Türkyilmaz, C. G. Daniliuc, G. Kehr, G. Erker, J. Organomet. Chem. 2017, 847, 167-172. doi: 10.1016/j.jorganchem.2017.03.030.
"Frustrated Lewis Pair vs Metal-Carbon σ-Bond Insertion Chemistry at an o-Phenylene-Bridged Cp2Zr+/PPh2 System", Z. Jian, C. G. Daniliuc, G. Kehr, G. Erker, Organometallics 2017, 36, 424-434. doi: 10.1021/acs.organomet.6b00828.
"Intermolecular Redox-Neutral Amine C-H Functionalization Induced by the Strong Boron Lewis Acid B(C6F5)3 in the Frustrated Lewis Pair Regime", G.-Q. Chen, G. Kehr, C. G. Daniliuc, M. Bursch, S. Grimme, G. Erker, Chem. Eur. J. 2017, 23, 4723-4729. doi: 10.1002/chem.201700477.
"Reversible formylborane/SO2 coupling at a frustrated Lewis pair", K.-Y. Ye, M. Bursch, Z.-W. Qu, C. G. Daniliuc, S. Grimme, G. Kehr, G. Erker, Chem. Commun. 2017, 53, 633-635. doi: 10.1039/c6cc07071j.
"CO-Reduction Chemistry: Reaction of a CO-Derived Formylhydridoborate with Carbon Monoxide, with Carbon Dioxide, and with Dihydrogen", Z. Jian, G. Kehr, C. G. Daniliuc, B. Wibbeling, T. Wiegand, M. Siedow, H. Eckert, M. Bursch, S. Grimme, G. Erker, J. Am. Chem. Soc. 2017, 139, 6474-6483. doi: 10.1021/jacs.7b02548.
"The Chemistry of a Non-Interacting Vicinal Frustrated Phosphane/Borane Lewis Pair", L.-M. Elmer, G. Kehr, C. G. Daniliuc, M. Siedow, H. Eckert, M. Tesch, A. Studer, K. Williams, T. H. Warren, G. Erker, Chem. Eur. J. 2017, 23, 6056-6068. doi: 10.1002/chem.201603954.
"Design and reactions of a carbon Lewis base/boron Lewis acid frustrated Lewis pair", J. Möricke, B. Wibbeling, C. G. Daniliuc, G. Kehr, G. Erker, Phil. Trans R. A 2017, 375, 20170015. doi: 10.1098/rsta.2017.0015.
"CO/CO, CO/NO and NO/NO coupling at a hidden frustrated Lewis pair templates", T. Wang, L. Wang, C. G. Daniliuc, K. Samigullin, M. Wagner, G. Kehr, G. Erker, Chem. Sci. 2017, 8, 2457-2463. doi: 10.1039/c6sc04459j.
"Cooperative carbon monoxide to formyl reduction at a trifunctional PBB frustrated Lewis pair", L.Wang, S. Zhang, Y. Hasegawa, C. G. Daniliuc, G. Kehr, G. Erker, Chem. Commun. 2017, 53, 5499-5502. doi: 10.1039/c7cc02214j.
"Step-Edge Assisted Direct Linear Alkane Coupling", J. Zhang, C.-r. Chang, B. Yang, N. Cao, C. Peng, H. Zhang, D.-T. D. Tang, F. Glorius, G. Erker, H. Fuchs, Q. Li, L. Chi, Chem. Eur. J. 2017, 23, 6185-6189. doi: 10.1002/chem.201605744.
"A Ferrocene based Phosphane/Borane Frustrated Lewis Pair for Asymmetric Imine Reduction", K.-Y. Ye, X. Wang, C. G. Daniliuc, G. Kehr, G. Erker, Eur. J. Inorg. Chem. 2017, 368-371. doi: 10.1002/ejic.201600834.
"Synthesis of a Small Cyclic Frustrated Phosphane/Borane Lewis Pair", J. Ugolotti, G. Kehr, C. G. Daniliuc, G. Erker, Synthesis 2017, 49, 53-58. doi: 10.1055/s-0036-1588597.
"Geminal bis-borane formation by borane Lewis acid induced cyclopropyl rearrangement and its frustrated Lewis pair reaction with carbon dioxide", Y.-L. Liu, G. Kehr, C. G. Daniliuc, G. Erker, Chem. Sci. 2017, 8, 1097-1104. doi: 10.1039/c6sc03468c.
"Coupling of Carbon Monoxide with Nitrogen Monoxide at a Frustrated Lewis Pair Template", K.-Y. Ye, G. Kehr, C. G. Daniliuc, L. Liu, S. Grimme, G. Erker, Angew. Chem. 2016, 128, 9362-9365. doi: 10.1002/ange.201603760. "Coupling of Carbon Monoxide with Nitrogen Monoxide at a Frustrated Lewis Pair Template", K.-Y. Ye, G. Kehr, C. G. Daniliuc, L. Liu, S. Grimme, G. Erker, Angew. Chem. Int. Ed. 2016, 55, 9216-9219. doi: 10.1002/anie.201603760.
"Phospha-Claisen Type Reactions at Frustrated Lewis Pair Frameworks", G.-Q. Chen, G. Kehr, C. Mück-Lichtenfeld, C. G. Daniliuc, G. Erker, J. Am. Chem. Soc. 2016, 138, 8554-8559. doi: 10.1021/jacs.6b04046.
"A Frustrated Phosphane-Borane Lewis Pair and Hydrogen: A Kinetics Study", T. Özgün, K. Bergander, L. Liu, C. G. Daniliuc, S. Grimme, G. Kehr, G. Erker, Chem. Eur. J. 2016, 22, 11958-11961. doi: 10.1002/chem.201603050.
"Unsaturated Vicinal Frustrated Lewis Pair Formation by Electrocyclic Ring Closure and Their Reaction with Nitric Oxide", T. Özgün, G.-Q. Chen, C. G. Daniliuc, A. C. McQuilken, T. H. Warren, R. Knitsch, H. Eckert, G. Kehr, G. Erker, Organometallics 2016, 35, 3667-3680. doi: 10.1021/acs.organomet.6b00627.
"Indirect synthesis of a pair of formal methane activation products at a phosphane/borane frustrated Lewis pair", S. Frömel, C. G. Daniliuc, C. Bannwarth, S. Grimme, K. Bussmann, G. Kehr, G. Erker, Dalton Trans. 2016, 45, 19230-19233. doi: 10.1039/c6dt04206f.
"Selective Oxidation of an Active Intramolecular Amine/Borane Frustrated Lewis Pair with Dioxygen", T. Wang, G. Kehr, L. Liu, S. Grimme, C. G. Daniliuc, G. Erker, J. Am. Chem. Soc. 2016, 138, 4302-4305. doi: 10.1021/jacs.6b00325.
"Rapid Dihydrogen Cleavage by Persistent Nitroxide Radicals under Frustrated Lewis Pair Conditions", X. Tao, G. Kehr, X. Wang, C. G. Daniliuc, S. Grimme, G. Erker, Chem. Eur. J. 2016, 22, 9504-9507. doi: 10.1002/chem.201602058.
"An Ethylene-Bridged Phosphane/Borane Frustrated Lewis Pair Featuring the –B(Fxyl)2 Lewis Acid Component", L. Wang, K. Samigullin, M. Wagner, A. C. McQuilken, T. H. Warren, C. G. Daniliuc, G. Kehr, G. Erker, Chem. Eur. J. 2016, 22, 11015-11021. doi: 10.1002/chem.201601583.
"Borata-Alkene Derived Syntheses of (F5C6)2B-Substituted Bis(indenyl) Group 4 Metal Complexes", S. Kohrt, G. Kehr, C. G. Daniliuc, R. S. Rojas, B. Rieger, C. Troll, G. Erker, Organometallics 2016, 35, 2689-2693. doi: 10.1021/acs.organomet.6b00427.
"Aminoxyl Radicals of B/P Frustrated Lewis Pairs: Refinement of the Spin-Hamiltonian Parameters by Field- and Temperature Dependent Pulsed EPR Spectroscopy", M. de Oliveira Jr., R. Knitsch, M. Sajid, A. Stute, L.-M. Elmer, G. Kehr, G. Erker, C. J. Magon, G. Jeschke, H. Eckert, PLoS One 2016, 1/22. doi: 10.1371/journal.pone.0157944.
"Cyclic Amine/Borane Lewis Pairs by the Reaction of N,N-Diallylaniline with Lancaster’s H2B-C6F5 Reagent", T. Wang, L. Liu, S. Grimme, C. G. Daniliuc, G. Kehr, G. Erker, Chem. Asian J. 2016, 11, 1394-1399. doi: 10.1002/asia.201600060.
"Direct P-functionalization of azobenzene by a cationic phosphidozirconocene complex", A. T. Normand, C. G. Daniliuc, G. Kehr, P. Le Gendre, G. Erker, Dalton Trans. 2016, 45, 3711-3714. doi: 10.1039/c6dt00416d.
"Nitro-redox reactions at a frustrated borane/phosphane Lewis pair", G.-Q. Chen, G. Kehr, C. G. Daniliuc, G. Erker, Dalton Trans. 2016, 45, 6820-6823. doi: 10.1039/c6dt00857g.
"Why Does the Intramolecular Trimethylene-Bridged Frustrated Lewis Pair Mes2PCH2CH2CH2B(C6F5)2 Not Activate Dihydrogen?", T. Özgün, K.-Y. Ye, C. G. Daniliuc, B. Wibbeling, L. Liu, S. Grimme, G. Kehr, G. Erker, Chem. Eur. J. 2016, 22, 5988-5995. doi: 10.1002/chem.201505200.
"Advanced 1,1-carboboration reactions with pentafluorophenylboranes", G. Kehr, G. Erker, Chem. Sci. 2016, 7, 56-65. doi: 10.1039/c5sc03282b.
"Unusual borane addition to conjugated dienylphosphanes under frustrated Lewis pair conditions", S. Krupski, G. Kehr, C. G. Daniliuc, G. Erker, Dalton Trans. 2016, 45, 6111-6117.doi: 10.1039/c5dt03879k.
"Cyclopropane formation under frustrated Lewis pair conditions", S. Krupski, G. Kehr, C. G. Daniliuc, G. Erker, Chem. Commun. 2016, 52, 2695-2697.doi: 10.1039/c5cc09585a.
"Selective N,O-Addition of the TEMPO Radical to Conjugated Boryldienes", F. Türkyilmaz, G. Kehr, J. Li, C. G. Daniliuc, M. Tesch, A. Studer, G. Erker, Angew. Chem. 2016, 128, 1492-1495. doi: 10.1002/ange.201509114; "Selective N,O-Addition of the TEMPO Radical to Conjugated Boryldienes", F. Türkyilmaz, G. Kehr, J. Li, C. G. Daniliuc, M. Tesch, A. Studer, G. Erker, Angew. Chem. Int. Ed. 2016, 55, 1470-1473. doi: 10.1002/ange.201509114.
"Cooperative reaction chemistry derived from a borata-diene framework", J. Yu, G. Kehr, C. G. Daniliuc, G. Erker, Chem. Commun. 2016, 52, 1393-1396.doi: 10.1039/c5cc07954c.
"Insertion Reactions of Neutral Phosphidozirconocene Complexes as a Convenient Entry into Frustrated Lewis Pair Territory", A. T. Normand, C. G. Daniliuc, B. Wibbeling, G. Kehr, P. Le Gendre, G. Erker, Chem. Eur. J. 2016, 22, 4285-4293. doi: 10.1002/chem.201504792.
"FLPNO Nitroxide Radical Formation by a 1,1-Carboboration Route", R. Liedtke, C. Eller, C. G. Daniliuc, K. Williams, T. H. Warren, M. Tesch, A. Studer, G. Kehr, G. Erker, Organometallics 2016, 35, 55-61. doi: 10.1021/acs.organomet.5b00886
"Formation of Thermally Robust Frustrated Lewis Pairs by Electrocyclic Ring Closure Reactions", G.-Q. Chen, G. Kehr, C. G. Daniliuc, C. Mück-Lichtenfeld, G. Erker, Angew. Chem. 2016, 128, 5616-5620. doi: 10.1002/ange.201510994; "Formation of Thermally Robust Frustrated Lewis Pairs by Electrocyclic Ring Closure Reactions", G.-Q. Chen, G. Kehr, C. G. Daniliuc, C. Mück-Lichtenfeld, G. Erker, Angew. Chem. Int. Ed. 2016, 55, 5526-5530.doi: 10.1002/ange.201510994.
"Phosphole formation by 1,1-carboboration - reactions of bis-alkynyl phosphanes with a frustrated P/B Lewis pair", A. Klose, G. Kehr, C. G. Daniliuc, G. Erker, Dalton Trans. 2016, 45, 2023-2030. doi: 10.1039/c5dt03055b.
"Frustrated Lewis Pair Chemistry Derived from Bulky Allenyl and Propargyl Phosphanes", C. Rosorius, J. Möricke, B. Wibbeling, A. C. McQuilken, T. H. Warren, C. G. Daniliuc, G. Kehr, G. Erker, Chem. Eur. J. 2016, 22, 1103-1113.doi: 10.1002/chem.201502493.
"Cooperative 1,1-addition reactions of vicinal phosphane/borane frustrated Lewis pairs", A. J. P. Cardenas, Y. Hasegawa, G. Kehr, T. H. Warren, G. Erker, Coord. Chem. Rev. 2016, 306, 468-482. doi: 10.1016/j.ccr.2015.01.006.
"Phosphido- and Amidozirconocene Cation-Based Frustrated Lewis Pair Chemistry", A. T. Normand, C. G. Daniliuc, B. Wibbeling, G. Kehr, P. Le Gendre, G. Erker, J. Am. Chem. Soc. 2015, 137, 10796-10808. doi: 10.1021/jacs.5b06551
"Bifunctional Behavior of Unsaturated Intramolecular Phosphane-Borane Frustrated Lewis Pairs Derived from Uncatalyzed 1,4-Hydrophosphination of a Dienylborane", G.-Q. Chen, G. Kehr, C. G. Daniliuc, B. Wibbeling, G. Erker, Chem. Eur. J. 2015, 21, 12449-12455. doi: 10.1002/chem.201501402
"Functionalization of Intramolecular Frustrated Lewis Pairs by 1,1-Carboboration with Conjugated Enynes", A. Feldmann, G. Kehr, C. G. Daniliuc, C. Mück-Lichtenfeld, G. Erker, Chem. Eur. J. 2015, 21, 12456-12464. doi: 10.1002/chem.201502278
"Trisubstituted Boroles by 1,1-Carboboration", F. Ge, G. Kehr, C. G. Daniliuc, C. Mück-Lichtenfeld, G. Erker, Organometallics 2015, 34, 4205-4208. doi: 10.1021/acs.organomet.5b00668
"A 1,1-Carboboration Route to Bora-Nazarov Systems", F. Ge, F. Türkyilmaz, C. G. Daniliuc, G. Kehr, G. Erker, Chem. Asian J. 2015, 10, 2497-2502. doi: 10.1002/asia.201500636.
"Synthesis of new asymmetric substituted boron amidines - Reactions with CO and transfer hydrogenations of phenylacetylene", A. R. Cabrera, R. S. Rojas, M. Valderrama, P. Plüss, H. Berke, C. G. Daniliuc, G. Kehr, G. Erker, Dalton Trans. 2015, 44, 19606-19614. doi: 10.1039/c5dt01966d.
"Enamine/butadienylborane cycloaddition in the frustrated Lewis pair regime", G.-Q. Chen, F. Türkyilmaz, C. G. Danliuc, C. Bannwarth, S. Grimme, G. Kehr, G. Erker, Org. Biomol. Chem. 2015, 13, 10477-10486. doi: 10.1039/c5ob01602a.
"Observation of a Thermally Induced Bora-Nazarov Cyclization at a Phosphole Framework", J. Möbus, G. Kehr, C. G. Daniliuc, C. Mück-Lichtenfeld, G. Erker, Angew. Chem. 2015,127, 12543-12546. doi: 10.1002/ange.201502850. "Observation of a Thermally Induced Bora-Nazarov Cyclization at a Phosphole Framework", J. Möbus, G. Kehr, C. G. Daniliuc, C. Mück-Lichtenfeld, G. Erker, Angew. Chem. Int. Ed. 2015, 54, 12366-12369. doi: 10.1002/anie.201502850.
"Synthesis and structures of N-arylcyano-β-diketiminate zinc complexes and adducts and their application in ring‐opening polymerization of L-lactide", O. S. Trofymchuk, C. G. Daniliuc, G. Kehr, G. Erker, R. S. Rojas, RSC Adv. 2015, 5, 21054-21065. doi: 10.1039/c4ra16670a
"Synthetic Endeavors towards Titanium Based Frustrated Lewis Pairs with Controlled Electronic and Steric Properties", A. T. Normand, P. Richard, C. Balan, C. G. Daniliuc, G. Kehr, G. Erker, P. Le Gendre, Organometallics 2015, 34, 2000-2011. doi: 10.1021/acs.organomet.5b00250
"Stoichiometric Reactions and Catalytic Hydrogenation with a Reactive Intramolecular Zr+/Amine Frustrated Lewis Pair", X. Xu, G. Kehr, C. G. Daniliuc, G. Erker, J. Am. Chem. Soc. 2015, 137, 4550-4557. doi: 10.1021/jacs.5b01623
"Solid-state EPR strategies for the structural characterization of paramagnetic NO adducts of frustrated Lewis pairs (FLPs)", M. de Olivera J., T. Wiegand, L.-M. Elmer, M. Sajid, G. Kehr, G. Erker, C. J. Magon, H. Eckert, J. Chem. Phys. 2015, 142, 124201. doi: 10.1063/1.4916066
"Unusual product formation in a 1,1-carboboration", C. Eller, C. G. Daniliuc, G. Kehr, G. Erker, Chem. Commun. 2015, 51, 8436-8438. doi: 10.1039/c5cc00734h
"TEMPO-mediated homocoupling of aryl Grignard reagents: mechanistic studies", S. Murarka, J. Möbus, G. Erker, C. Mück-Lichtenfeld, A. Studer, Org. Biomol. Chem. 2015, 13, 2762-2767. doi: 10.1039/c4ob02689f
"Frustrated Lewis Pair Behavior of [Cp2ZrOCR2CH2PPh2]+ Cations", X. Xu, G. Kehr, C. G. Daniliuc, G. Erker, Organometallics 2015, 34, 2655-2661. doi: 10.1021/om501312a
"Thiophene synthesis via 1,1-carboboration", C. Eller, G. Kehr, C. G. Daniliuc, D. W. Stephan, G. Erker, Chem. Commun. 2015, 51, 7226-7229. doi: 10.1039/c5cc01806d
"Structural Characterization of Frustrated Lewis Pairs and their Reaction Products Using Modern Solid State NMR Techniques", T. Wiegand, M. Siedow, H. Eckert, G. Kehr, G. Erker, Isr. J. Chem. 2015, 55, 150-178. doi: 10.1002/ijch.201400149
"P/B-Ketene Adduct Formation from Acyl Chlorides at a Vicinal Phosphane/Borane Frustrated Lewis Pair", S. Frömel, G. Radermacher, B. Wibbeling, C. G. Daniliuc, T. H. Warren, G. Kehr, G. Erker, Isr. J. Chem. 2015, 55, 210-215. doi: 10.1002/ijch.201400133
"Benzannulation of Heterocyclic Frameworks by 1,1-Carboboration Pathways", R. Liedtke, F. Tenberge, C. G. Daniliuc, G. Kehr, G. Erker, J. Org. Chem. 2015, 80, 2240-2248. doi: 10.1021/jo502753s
"Chemie frustierter Lewis-Paare: Entwicklung und Perspektiven", D. W. Stephan, G. Erker, Angew. Chem. 2015, 127, 6498-6541. doi: 10.1002/ange.201409800; "Frustrated Lewis Pair Chemistry: Development and Perspectives", D. W. Stephan, G. Erker, Angew. Chem. Int. Ed. 2015, 54, 6400-6441. doi: 10.1002/anie.201409800
"Direct synthesis of a geminal zwitterionic phosphonium/hydridoborate system - developing an alternative tool for generating frustrated Lewis pair hydrogen activation systems", J. Yu, G. Kehr, C. G. Daniliuc, C. Bannwarth, S. Grimme, G. Erker, Org. Biomol. Chem. 2015, 13, 5783-5792. doi: 10.1039/c5ob00634a
"Stabilized borata-alkene formation: structural features, reactions and the special role of the counter cation", S. Kohrt, S. Dachwitz, C. G. Daniliuc, G. Kehr, G. Erker, Dalton Trans. 2015, 44, 21032-21040. doi: 10.1039/c5dt04058b
"α−Hydroxymethylation of Pyridines at a Frustrated Lewis Pair Template", M. Sajid, G. Kehr C. G. Daniliuc, G. Erker, Chem. Eur. J. 2015, 21, 1454-1457. doi: 10.1002/chem.201405553
"Reactions of Boroles Formed by 1,1-Carboboration", F. Ge, G. Kehr, C. G. Daniliuc, G. Erker, Organometallics 2015, 34, 229-235. doi: 10.1021/om501085j
"1,1-Alkenylboration of diarylphosphino-enynes: convenient synthetic entry to vicinal P/B Lewis pairs at extended conjugated π-frameworks", G.-Q. Chen, G. Kehr, C. G. Daniliuc, G. Erker, Org. Biomol. Chem. 2015, 13, 764-769. doi: 10.1039/c4ob02134g.
"α-CH acidity of alkyl-B(C6F5)2 compounds – the role of stabilized borata-alkene formation in frustrated Lewis pair chemistry", P. Moquist, G.-Q. Chen, C. Mück-Lichtenfeld, K. Bussmann, C. G. Daniliuc, G. Kehr, G. Erker, Chem. Sci. 2015, 6, 816-825. doi: 10.1039/c4sc01711k.
"1,1-Carboboration Reactions of Strongly Electrophilic 2-Borylethyl Thioethers", C. Eller, B. Billmann, C. G. Daniliuc, G. Kehr, G. Erker, Z. Naturforsch. 2014, 69b, 1357-1364. doi: 10.5560/ZNB.2014-4190.
"Controlling two-phase self assembly of an adenine derivative on HOPG via kinetic effects", C. Wang, P. K. Jana, H. Zhang, Z. Mu, G. Kehr, T. Blömker, G. Erker, H. Fuchs, A. Heuer, L. Chi, Chem. Commun. 2014, 50, 9192-9195. doi: 10.1039/c4cc03714f.
"Formation of Unsaturated Vicinal Zr+/P Frustrated Lewis Pairs by the Unique 1,1-Carbozirconation Reactions", X. Xu, G. Kehr, C. G. Daniliuc, G. Erker, J. Am. Chem. Soc. 2014, 136, 12431-12443. doi: 10.1021/ja5068146.
"Developing Phospha-Stork Chemistry Induced by a Borane Lewis Acid", Y. Hasegawa, C. G. Daniliuc, G. Kehr, G. Erker, Angew. Chem. 2014, 126, 12364-12367. doi: 10.1002/ange.201406557. Angew. Chem. Int. Ed. 2014, 53, 12168-12171. doi: 10.1002/anie.201406557.
"Polymorphism in P,P-[3]ferrocenophanes: insights from an NMR crystallographic approach", T. Wiegand, D. Lüdeker, G. Brunklaus, K. Bussmann, G. Kehr, G. Erker, H. Eckert, Dalton Trans. 2014, 43, 12639-12647. doi: 10.1039/c4dt01071j.
"Reaction of five-membered zirconacycloallenoids with the strong Lewis acid B(C6F5)3", G. Bender, C. G. Daniliuc, B. Wibbeling, G. Kehr, G. Erker, Dalton Trans. 2014, 43, 12210-12213. doi: 10.1039/C4DT01137F.
"Crystal Packing Induced Carbon-Carbon Double-Triple Bond Isomerization in a Zirconocene Complex", J. G. Brandenburg, G. Bender, J. Ren, A. Hansen, S. Grimme, H. Eckert, C. G. Daniliuc, G. Kehr, G. Erker, Organometallics 2014, 33, 5358-5364. doi: 10.1021/om500678p.
"Reactivity of an Intramolecular Fluorophosphonium Fluoroborate", O. Ekkert, C. B. Caputo, C. Pranckevicius, C. G. Daniliuc, G. Kehr, G. Erker, D. W. Stephan, Chem. Eur. J. 2014, 20, 11287-11290. doi: 10.1002/chem.201403110.
"Catalytic Formation of Five-membered Zirconacycloallenoids and Their Reaction with Carbon Dioxide", S. K. Podiyanachari, G. Bender, G. Kehr, C. G. Daniliuc, G. Erker, Organometallics 2014, 33, 3481-3488. doi: 10.1021/om500399w.
"Solid-state NMR strategies for the structural characterization of paramagnetic NO adducts of Frustrated Lewis Pairs (FLPs)", T. Wiegand, M, Sajid, G. Kehr, G. Erker, H. Eckert, Solid State Nucl. Magn. Reson. 2014, 61-62, 19-27. doi: 10.1016/j.ssnmr.2014.04.001.
"Solid-state NMR studies for the determination of 11B electric field-gradient tensor orientations in P/B Frustrated Lewis Pairs and related systems", T. Wiegand, M. Siedow, O. Ekkert, J. Möbus, C. G. Daniliuc, G. Kehr, G. Erker, H. Eckert, Solid State Nucl. Magn. Reson. 2014, 61-62, 8-14. doi: 10.1016/j.ssnmr.2014.03.002.
"Formation, structural characterization, and reactions of a unique cyclotrimeric vicinal Lewis pair containing (C6F5)2P-Lewis base and (C6F5)BH-Lewis acid components", M. Erdmann, T. Wiegand, J. Blumenberg, H. Eckert, J. Ren, C. G. Daniliuc, G. Kehr, G. Erker, Dalton Trans. 2014, 43, 15159-15169. doi: 10.1039/c4dt02081b.
"Zwitterionic Phosphirenium Borates Derived from Bis(alkynyl)mesityl Phosphanes and Tris(pentafluorophenyl)borane", J. Möbus, K. Malessa, H. Frisch, C. G. Daniliuc, R. Fröhlich, G. Kehr, G. Erker, Heteroat. Chem. 2014, 25, 396-401. doi: 10.1002/hc.21184.
"Formation of Allenes by 1,4-Addition of Intermolecular Phosphane/Borane Frustrated Lewis Pairs to a Conjugated Enyne", P. Feldhaus, B. Wibbeling, R. Fröhlich, C. G. Daniliuc, G. Kehr, G. Erker, Synlett 2014, 25, 1529-1553. doi: 10.1055/s-0033-1341071.
"Preparation of Dithienylphospholes by 1,1-Carboboration", J. Möbus, A. Galstyan, A. Feldmann, C. G. Daniliuc, R. Fröhlich, C. A. Strassert, G. Kehr, G. Erker, Chem. Eur. J. 2014, 20, 11883-11893. doi: 10.1002/chem.201403102.
"Formation of a dihydroborole by catalytic isomerization of a divinylborane", R. A. Adler Yañez, G. Kehr, C. G. Daniliuc, B. Schirmer, G. Erker, Dalton Trans. 2014, 43, 10794-10800. doi: 10.1039/c4dt01423e.
"Frustrated Lewis pair chemistry of carbon, nitrogen and sulfur oxides", D. W. Stephan, G. Erker, Chem. Sci. 2014, 5, 2625-2641. doi: 10.1039/c4sc00395k.
"Frustrated Lewis Pair Modification by 1,1-Carboboration: Disclosure of a Remarkable Phosphine Oxide Triggered Nitrogen Monoxide Addition to an Intramolecular P/B Frustrated Lewis Pair", R. Liedtke, F. Scheidt, J. Ren, B. Schirmer, A. J. P. Cardenas, C. G. Daniliuc, H. Eckert, T. H. Warren, S. Grimme, G. Kehr, G. Erker, J. Am. Chem. Soc. 2014, 136, 9014-9027. doi: 10.1021/ja5028293.
"Borole Formation by 1,1-Carboboration", F. Ge, G. Kehr, C. G. Daniliuc, G. Erker, J. Am. Chem. Soc. 2014, 136, 68-71. doi: 10.1021/ja4110396.
"Indirect “No-Bond” 31P···31P Spin-Spin Couplings in P,P-[3]Ferrocenophanes: Insights from Solid-State NMR Spectroscopy and DFT calculations", T. Wiegand, H. Eckert, J. Ren, G. Brunklaus, R. Fröhlich, C. G. Daniliuc, G. Lübbe, K. Bussmann, G. Kehr, G. Erker, S. Grimme, J. Phys. Chem. A. 2014, 118, 2316–2331. doi: 10.1021/jp500172b.
"The B(C6F5)3 Boron Lewis Acid Route to Arene-Annulated Pentalenes", C. Chen, M. Harhausen, A. Fukazawa, S. Yamaguchi, R. Fröhlich, C. G. Daniliuc, J. L. Petersen, G. Kehr, G. Erker, Chem. Asian J., 2014, 9, 1671–1681. doi: 10.1002/asia.201400096.
G. Kehr and G. Erker (2014) ‘Ferrocenes in frustrated Lewis pair chemistry’ in The Chemistry of Organoiron Compounds, edited by I. Marek and Z. Rappoport. John Wiley & Sons, Ltd: Chichester, UK, pp. 233-247. doi: 10.1002/9780470682531.pat0661.
"The frustrated Lewis pair pathway to methylene phosphonium systems", Y. Hasegawa, G. Kehr, S. Ehrlich, S. Grimme, C. G. Daniliuc, G. Erker, Chem. Sci. 2014, 5, 797-803. doi: 10.1039/c3Sc52327f.
"Borata-alkene derivatives conveniently made by frustrated Lewis pair chemistry", J. Möbus, G. Kehr, C. G. Daniliuc, R. Fröhlich, G. Erker, Dalton Trans. 2014, 43, 632-638. doi: 10.1039/c3dt52373j.
"Internal Adduct Formation of Active Intramolecular C4-bridged Frustrated Phosphane/Borane Lewis Pairs", X. Wang, G. Kehr, C. G. Daniliuc, G. Erker, J. Am. Chem. Soc. 2014, 136, 3293-3303. doi: 10.1021/ja413060u.
"Formylborane Formation by Frustrated Lewis Pair Templates", M. Sajid, G. Kehr, C. G. Daniliuc, G. Erker, Angew. Chem. 2014, 126, 1136-1139. doi: 10.1002/ange.201307551; "Formylborane Formation by Frustrated Lewis Pair Templates", M. Sajid, G. Kehr, C. G. Daniliuc, G. Erker, Angew. Chem. Int. Ed. 2014, 53, 1118-1121. doi: 10.1002/anie.201307551.
"Reaction of a Bridged Frustrated Lewis Pair with Nitric Oxide: A Kinetic Study", J. C. M. Pereira, M. Sajid, G. Kehr, A. M. Wright, B. Schirmer, Z.-W. Qu, S. Grimme, G. Erker, P. C. Ford, J. Am. Chem. Soc. 2014, 136, 513-519. doi: 10.1021/ja4118335.
"A Phoshino Calix[4]arene Bis-Frustrated Lewis Pair", G. E. Arnott, P. Moquist, C. G. Daniliuc, G. Kehr, G. Erker, Eur. J. Inorg. Chem. 2014, 1394-1398. doi: 10.1002/ejic.201301529.
"Ethene/alkyne exchange reaction at an intramolecular frustrated Lewis pair", C. Eller, K. Bussmann, G. Kehr, B. Wibbeling, R. Fröhlich, C. G. Daniliuc, G. Erker, Chem. Commun. 2014, 50, 1980-1982. doi: 10.1039/c3cc47769j.
"The Mannich Route to Amino-Functionalized [3]Ferrocenophanes", A. Stute, G. Kehr, G. Erker, Adv. Organomet. Chem. 2014, 62, 219-259. doi: 10.1016/B978-0-12-800976-5.00004-7. (A. Stute, G. Kehr and G. Erker, The Mannich Route to Amino-Functionalized [3]Ferrocenophanes. In: Pedro J. Pérez, editor, Advances in Organometallic Chemistry, Vol. 62, Burlington: Academic Press, 2014, pp. 219-259).
"Thymine and Adenine Tetrads Formed on Anisotropic Metal Surfaces", D. Zhong, T. Blömker, C. Mück-Lichtenfeld, H. Zhang, G. Kehr, G. Erker, H. Fuchs, L. Chi, Small 2014, 10, 265-270. doi: 10.1002/smll.201301595.
"Reactions of (Diphenylphosphinomethyl)zirconocene Chloride with B(C6F5)3: Competition Between P/B and P/Zr+ Frustrated Lewis Pair Reactions", X. Xu, G. Kehr, C. G. Daniliuc, G. Erker, Organometallics 2013, 32, 7306-7311. doi: 10.1021/om400769y.
"Carbonylation Reactions of Intramolecular Vicinal Frustrated Phosphane/Borane Lewis Pairs", M. Sajid, A. Lawzer, W. Dong, C. Rosorius, W. Sander, B. Schirmer, S. Grimme, C. G. Daniliuc, G. Kehr, G. Erker, J. Am. Chem. Soc. 2013, 135, 18567-18574. doi: 10.1021/ja408815k.
"An Enamine/HB(C6F5)2 Adduct as a Dormant State in Frustrated Lewis Pair Chemistry", B.-H. Xu, K. Bussmann, R. Fröhlich, C. G. Daniliuc, J. G. Brandenburg, S. Grimme, G. Kehr, G. Erker, Organometallics 2013, 32, 6745-6752. doi: 10.1021/om4004225.
"Remarkable Behavior of a Bifunctional Alkynylborane Zirconocene Complex toward Donor Ligands and Acetylenes", S. K. Podiyanachari, G. Kehr, C. Mück-Lichtenfeld, C. G. Daniliuc, G. Erker, J. Am. Chem. Soc. 2013, 135, 17444-17456. doi: 10.1021/ja408385h.
"Temperature-Dependent Self-Assembly of Adenine Derivative on HOPG", Z. Mu, O. Rubner, M. Bamler, T. Blömker, G. Kehr, G. Erker, A. Heuer, H. Fuchs, L. Chi, Langmuir 2013, 29, 10737-10743. doi: 10.1021/la401974t.
"Reaction of Diphenylphosphinoacetylene with RB(C6F5)2 Reagents: Evidence for a Remarkable Sequence of Synergistic Frustrated Lewis Pair Addition Reactions", J. Yu, G. Kehr, C. G. Daniliuc, G. Erker, Inorg. Chem. 2013, 52, 11661-11668. doi: 10.1021/ic402139g.
"Reactions of dimethylzirconocene complexes with a vicinal frustrated P/B Lewis pair", S. Frömel, G. Kehr, R. Fröhlich, C. G. Daniliuc, G. Erker, Dalton Trans. 2013, 42, 14531-14536. doi: 10.1039/c3dt52128a.
"Formation and structual characterization of a five-membered zirconacycloallenoid", G. Bender, G. Kehr, C. G. Daniliuc, B. Wibbeling, G. Erker, Dalton Trans. 2013, 42, 14673-14676. doi: 10.1039/c3dt51497h.
"Structural features and reactions of a geminal frustrated phosphane/borane Lewis pair", C. Rosorius, C. G. Daniliuc, R. Fröhlich, G. Kehr, G. Erker, J. Organomet. Chem. 2013, 744, 149-155. doi: 10.1016/j.jorganchem.2013.06.005.
"Reaction of strongly electrophilic alkenylboranes with phosphanylalkynes: rare examples of intermolecular 1,1-alkenylboration reactions", O. Ekkert, O. Tuschewitzki, C. G. Daniliuc, G. Kehr, G. Erker, Chem. Commun. 2013, 49, 6992-6994. doi: 10.1039/C3CC43294G.
"Facile 1,1-Carboboration Reaction of a Diarylphosphino-substituted Conjugated Diyne with Tris(pentafluorophenyl)borane", P. Feldhaus, G. Kehr, R. Fröhlich, C. G. Daniliuc, G. Erker, Z. Naturforsch. 2013, 68b, 666-674. doi: 10.5560/ZNB.2013-3088.
"A Unique Frustrated Lewis Pair Pathway to Remarkably Stable Borata-Alkene Systems", J. Yu, G. Kehr, C. G. Daniliuc, G. Erker, Eur. J. Inorg. Chem. 2013, 3312-3315. doi: 10.1002/ejic.201300520.
"1,1-Carbozirconation: Unusual Reaction of an Alkyne with a Methyl Zirconocene Cation and Subsequent Frustrated Lewis Pair Like Reactivity", X. Xu, G. Kehr, C. G. Daniliuc, G. Erker, Angew. Chem. 2013, 125, 13874-13877 doi: 10.1002/ange.201307493; "1,1-Carbozirconation: Unusual Reaction of an Alkyne with a Methyl Zirconocene Cation and Subsequent Frustrated Lewis Pair Like Reactivity", X. Xu, G. Kehr, C. G. Daniliuc, G. Erker, Angew. Chem. Int. Ed. 2013, 52, 13629-13632. doi: 10.1002/anie.201307493.
"Dibenzopentalenes from B(C6F5)3-Induced Cyclization Reactions of 1,2−Bis(phenylethynyl)benzenes", C. Chen, M. Harhausen, R. Liedtke, K. Bussmann, A. Fukazawa, S. Yamaguchi, J. L. Petersen, C. G. Daniliuc, R. Fröhlich, G. Kehr, G. Erker, Angew. Chem. 2013, 125, 6108-6112. doi: 10.1002/ange.201300871. "Dibenzopentalenes from B(C6F5)3-Induced Cyclization Reactions of 1,2−Bis(phenylethynyl)benzenes", C. Chen, M. Harhausen, R. Liedtke, K. Bussmann, A. Fukazawa, S. Yamaguchi, J. L. Petersen, C. G. Daniliuc, R. Fröhlich, G. Kehr, G. Erker, Angew. Chem. Int. Ed. 2013, 52, 5992-5996. doi: 10.1002/anie.201300871.
"Electronic control in frustrated Lewis pair chemistry: adduct formation of intramolecular FLP systems with –P(C6F5)2 Lewis base components", A. Stute, G. Kehr, C. G. Daniliuc, R. Fröhlich, G. Erker, Dalton Trans. 2013, 42, 4487-4499. doi: 10.1039/C2DT32806B.
"Unusual Pathway Taken in the Reaction of Bis(alkynyl)diisopropylaminoboranes with B(C6F5)3", F. Ge, G. Kehr, C. G. Daniliuc, G. Erker, Chem. Asian J. 2013, 8, 2227-2234. doi: 10.1002/asia.201300536.
"Reactions of a Cationic Geminal Zr+/P Pair with Small Molecules", X. Xu, G. Kehr, C. G. Daniliuc, G. Erker, J. Am. Chem. Soc. 2013, 135, 6465-6476. doi: 10.1021/ja3110076.
"Facile 1,1-Carboboration Reactions of Acetylenic Thioethers", C. Eller, C. G. Daniliuc, R. Fröhlich, G. Kehr, G. Erker, Organometallics 2013, 32, 384-386. doi: 10.1021/om400016t.
"Facile Carbon Monoxide Reduction at Intramolecular Frustrated P/B Lewis Pair Templates", M. Sajid, L.-M. Elmer, C. Rosorius, C. G. Daniliuc, S. Grimme, G. Kehr, G. Erker, Angew. Chem. 2013, 125, 2299-2302. (hot paper). doi: 10.1002/ange.201208750. "Facile Carbon Monoxide Reduction at Intramolecular Frustrated P/B Lewis Pair Templates", M. Sajid, L.-M. Elmer, C. Rosorius, C. G. Daniliuc, S. Grimme, G. Kehr, G. Erker, Angew. Chem. Int. Ed. 2013, 52, 2243-2246. (hot paper). doi: 10.1002/anie.201208750.
"Intramolecular Frustrated Lewis Pairs: Formation, Structural and Chemical Features", G. Kehr, S. Schwendemann, G. Erker, Top. Curr. Chem. 2013, 332, 45-83. doi: 10.1007//128_2012_373.
"Functional group chemistry at intramolecular frustrated Lewis pairs: substituent exchange at the Lewis acid site with 9-BBN", M. Erdmann, C. Rösener, T. Holtrichter-Rößmann, C. G. Daniliuc, R. Fröhlich, W. Uhl, E.-U. Würthwein, G. Kehr, G. Erker, Dalton Trans. 2013, 42, 709-718. doi: 10.1039/c2dt31737k.
"Reactions of phosphorus/boron frustrated Lewis pairs with SO2", M. Sajid, A. Klose, B. Birkmann, L. Liang, B. Schirmer, T. Wiegand, H. Eckert, A. J. Lough, R. Fröhlich, C. G. Daniliuc, S. Grimme, D. W. Stephan, G. Kehr, G. Erker, Chem. Sci. J. 2013, 4, 213-219. doi: 10.1039/c2sc21161k.
"Frustrated Lewis Pair Mediated Hydrogenations", D. W. Stephan, G. Erker, Top. Curr. Chem. 2013, 332, 85-110. doi: 10.1007/128_2012_392.
"Radical Frustrated Lewis Pairs", T. H. Warren, G. Erker, Top. Curr. Chem. 2013, 334, 219-238. doi: 10.1007/128_2012_390.
"Noninteracting, Vicinal Frustrated P/B-Lewis Pair at the Norbornane Framework: Synthesis, Characterization and Reactions", M. Sajid, G. Kehr, T. Wiegand, H. Eckert, C. Schwickert, R. Pöttgen, A. J. P. Cardenas, T. H. Warren, R. Fröhlich, C. G. Daniliuc, G. Erker, J. Am. Chem. Soc. 2013, 135, 8882-8895. doi: 10.1021/ja400338e.
"Ferrocenes in Frustrated Lewis Pair Chemistry", G. Kehr, G. Erker, Patai's Chemistry of Functional Groups 2013. doi: 10.1002/9780470682531.pat0661.
"Reaction of Unsaturated Vicinal Phosphane/Borane Frustrated Lewis Pairs with Benzaldehyde", O. Ekkert, G. Kehr, C. G. Daniliuc, R. Fröhlich, B. Wibbeling, J. L. Petersen, G. Erker, Z. Anorg. Allg. Chem. 2013, 639, 2455-2462 doi: 10.1002/zaac.201300421.doi: 10.1002/zaac.201300421).
"Reaction of an „Invisible“ Frustrated N/B Lewis Pair with Dihydrogen", S. Schwendemann, S. Oishi, S. Saito, R. Fröhlich, G. Kehr, G. Erker, Chem. Asian J. 2013, 8, 212-217. doi: 10.1002/asia.201200776.
"Remarkable coordination behavior of alkyl isocyanides toward unsaturated vicinal frustrated P/B Lewis pairs", O. Ekkert, G. González Miera, T. Wiegand, H. Eckert, B. Schirmer, J. L. Petersen, C. G. Daniliuc, R. Fröhlich, S. Grimme, G. Kehr, G. Erker, Chem. Sci. 2013, 4, 2657-2664. doi: 10.1039/C3SC00082F.
"Carboboration Reactions of 1,2-Bis((diarylphosphino)ethynyl)benzenes with Tris(pentafluorophenyl)-borane", R. Liedtke, G. Kehr, R. Fröhlich, C. G. Daniliuc, B. Wibbeling, J. L. Petersen, G. Erker, Helv. Chim. Acta 2012, 95, 2515-2527. doi: 10.1002/hlca.201200495.
"Anomalous Staudinger reaction at intramolecular frustrated P-B Lewis Pair frameworks", A. Stute, L. Heletta, R. Fröhlich, C. G. Daniliuc, G. Kehr, G. Erker, Chem. Commun. 2012, 48, 11739-11741. doi: 10.1039/c2cc36782c.
"Frustrated Lewis pairs: Some recent developments", G. Erker, Pure Appl. Chem. 2012, 84, 2203-2217. doi: 10.1351/pac-con-12-04-07.
"Chemistry of the five-membered zirconacycloallenoids: reactions with unsaturated substrates", G. Bender, G. Kehr, R. Fröhlich, J. L. Petersen, G. Erker, Chem. Sci. 2012, 3, 3534-5340. doi: 10.1039/c2sc20745a.
"Facile formation of five-membered N-heterocyclic zirconacycloallenoids", S. K. Podiyanachari, R. Fröhlich, C. G. Daniliuc, J. L: Petersen, G. Kehr, G. Erker, N. Suzuki, S. Yuasa, K. Hagimori, S. Inoue, T. Asada, T. Takemoto, Y. Masuyama, Dalton Trans. 2012, 41, 10811-10816. doi: 10.1039/c2dt31343j.
"Binding of Molecular Magnesium Hydrides to a Zirconocene-Enyne Template", G. Bender, T. Wiegand, H. Eckert, R. Fröhlich, C. G. Daniliuc, C. Mück-Lichtenfeld, S. Ndambuki, T. Ziegler, G. Kehr, G. Erker, Angew. Chem. 2012, 124, 8976-8979. doi: 10.1002/ange.201203372. "Binding of Molecular Magnesium Hydrides to a Zirconocene-Enyne Template", G. Bender, T. Wiegand, H. Eckert, R. Fröhlich, C. G. Daniliuc, C. Mück-Lichtenfeld, S. Ndambuki, T. Ziegler, G. Kehr, G. Erker, Angew. Chem. Int. Ed. 2012, 51, 8846-8849. doi: 10.1002/anie.201203372.
"Hydrogen Activation by an Intramolecular Boron Lewis Acid/Zirconocene Pair", S. K. Podiyanachari, R. Fröhlich, C. G. Daniliuc, J. L. Petersen, C. Mück-Lichtenfeld, G. Kehr, G. Erker, Angew. Chem. 2012, 124, 8960-8963. doi: 10.1002/ange.201202218. "Hydrogen Activation by an Intramolecular Boron Lewis Acid/Zirconocene Pair", S. K. Podiyanachari, R. Fröhlich, C. G. Daniliuc, J. L. Petersen, C. Mück-Lichtenfeld, G. Kehr, G. Erker, Angew. Chem. 2012, 51, 8830-8833. doi: 10.1002/anie.201202218.
"Splitting of dihydrogen by five-membered zirconacycloallenoids: a novel pathway to conjugated diene zirconocene complexes", G. Bender, G. Kehr, C. G. Daniliuc, Q. M. Dao, S. Ehrlich, S. Grimme, G. Erker, Chem. Commun. 2012, 48, 11085-11087. doi: 10.1039/c2cc36189b.
"Reversible Heterolytic Si–H Bond Activation by an Intramolecular Frustrated Lewis Pair", W. Nie, H. F. T. Klare, M. Oestreich, R. Fröhlich, G. Kehr, G, Erker, Z. Naturforsch. 2012, 67b, 987-994. doi: 10.5560/znb.2012-0181.
"Reactions of a methylzirconocene cation with phosphinoalkynes: an alternative pathway for generating Cp2Zr(II) systems", X. Xu, R. Fröhlich, C. G. Daniliuc, G. Kehr, G Erker, Chem. Commun. 2012, 48, 6109-6111. doi: 110.1039/C2CC31883K.
"Alkenylborane-Derived Frustrated Lewis Pairs: Metal-Free Catalytic Hydrogenation Reactions of Electron-Deficient Alkenes", J. Sreedhar Reddy, B.-H. Xu, T. Mahdi, R. Fröhlich, G. Kehr, D. W. Stephan, G. Erker, Organometallics 2012, 31, 5638-5649. doi: 10.1021/om3006068.
"("Ferrocene-salaldiminato")zirconium Complexes for Ethylene Polymerization Catalysis: The Role of the Bulky Substituents", X. Wang, R. Fröhlich, C. G. Daniliuc, B. Rieger, A. Jonovic, G. Kehr, G. Erker, Organometallics 2012, 31, 6741-6752. doi: 10.1021/om3004509.
"N,N-Addition of Frustrated Lewis Pairs to Nitric Oxide: An Easy Entry to a Unique Family of Aminoxyl Radicals", M. Sajid, A. Stute, A. J. P. Cardenas, B. J. Culotta, J. A. M. Hepperle, T. H. Warren, B. Schirmer, S. Grimme, A. Studer, C. G. Daniliuc, R. Fröhlich, J. L. Petersen, G. Kehr, G. Erker, J. Am. Chem. Soc. 2012, 134, 10156-10168. doi: 10.1021/ja302652a.
"1,1-Carboboration Route to Substituted Naphthalenes", R. Liedtke, M. Harhausen, R. Fröhlich, G. Kehr, G. Erker, Org. Lett. 2012, 14, 1448-1451. doi: 10.1021/ol300193e.
"Halogen Addition to a Frustrated Lewis Pair", S. Frömel, R. Fröhlich, C. G. Daniliuc, G. Kehr, G. Erker, Eur. J. Inorg. Chem. 2012, 3774-3779. doi: 10.1002/ejic.201200288.
"Propylene Polymerization with α-Keto-β-Diimine Initiators Proceeds via Enantiomorphic Site Control", J. D. Azoulay, H. Gao, Z. A. Koretz, G. Kehr, G. Erker, F. Shimizu, G. B. Galland, G. C. Bazan, Macromolecules 2012, 45, 4487-4493. doi: 10.1021/ma300504j.
"Reactions of Modified Intermolecular Frustrated P/B Lewis Pairs with Dihydrogen, Ethene and Carbon Dioxide", M. Harhausen, R. Fröhlich, G. Kehr, G. Erker, Organometallics 2012, 31, 2801-2809. doi: 10.1021/om201076f.
"Double arylation of acetylene dicarboxylate with B(C6F5)3", H. Nakatsuka, R. Fröhlich, M. Kitamura, G. Kehr, G. Erker, Eur. J. Inorg. Chem. 2012, 47, 1163-1166. doi: 10.1002/ejic.201101413.
"Frustrated Lewis Pair Addition to Conjugated Diynes: Formation of Zwitterionic 1,2,3-Butatriene Derivatives", P. Feldhaus, B. Schirmer, B. Wibbeling, C. G. Daniliuc, R. Fröhlich, S. Grimme, G. Kehr, G. Erker, Dalton Trans 2012, 41, 9135-9142. doi: 10.1039/C2DT30321C.
"Preparation of Dihydroborole Derivatives by a Simple 1,1-Carboboration Route", A. Feldmann, A. Iida, R. Fröhlich, S. Yamaguchi, G. Kehr, G. Erker, Organometallics 2012, 31, 2445-2451. doi: 10.1021/om300065m.
"New Insights into Frustrated Lewis Pairs: Structural Investigations of Intramolecular Phosphane–Borane Adducts by Using Modern Solid-State NMR Techniques and DFT Calculations", T. Wiegand, H. Eckert, O. Ekkert, R. Fröhlich, G. Kehr, G. Erker, S. Grimme, J. Am. Chem. Soc. 2012, 134, 4236-4249. doi: 10.1021/ja210160k.
"Die 1,1-Carboborierung von Bis(alkinyl)phosphanen als Zugang zum Phospholgerüst", J. Möbus, Q. Bonnin, K. Ueda, R. Fröhlich, K. Itami, G. Kehr, G. Erker, Angew. Chem. 2012, 124, 1990-1993. doi: 10.1002/ange.201107398; "The 1,1-Carboboration of Bis(alkynyl)phosphanes as a Route to Phosphole Compounds", J. Möbus, Q. Bonnin, K. Ueda, R. Fröhlich, K. Itami, G. Kehr, G. Erker, Angew. Chem. Int. Ed. 2012, 51, 1954-1957. doi: 10.1002/anie.201107398.
"1,1-Carboboration", G. Kehr, G. Erker, Chem. Commun. 2012, 48, 1839-1850. doi: 10.1039/c1cc15628d.
"Frustrated Lewis Pair Behavior of Intermolecular Amine/B(C6F5)3 Pairs", T. Voss, T. Mahdi, E. Otten, R. Fröhlich, G. Kehr, D. W. Stephan, G. Erker, Organometallics 2012, 31, 2367-2378. doi: 10.1021/om300017u.
"Reaction of Frustrated Lewis Pairs with Ketones and Esters", B.-H. Xu, R. A. Adler Yanez, H. Nakatsuka, M. Kitamura, R. Fröhlich, G. Kehr, G. Erker, Chem. Asian J. 2012, 7, 1347-1356. doi: 10.1002/asia.201100960.
"Reaction of a 6-Dimethylaminopentafulvene with the Mes2P-CH2CH2-B(C6F5)2 Frustrated Lewis Pair", B.-H. Xu, C. M. Mömming, G. Kehr, R. Fröhlich, G. Erker, Chem. Eur. J. 2012, 18, 1826-1830. doi: 10.1002/chem.201101937.
"Synthesis of [(π-cyano-P-nacnac)Cp] and [(π-cyano-nacnac)Cp]-zirconium Complexes, and their Remote Activation for Ethylene Polymerization", R. S. Rojas, A. R. Cabrera, B. C. Peoples, K. Spannhoff, M. Valderrama, R. Fröhlich, G. Kehr, G. Erker, Dalton Trans. 2012, 41, 1243-1251. doi: 10.1039/C1DT11261A.
"6-Dimethylaminopentafulvene as Lewis Base Component in Frustrated Lewis Pairs: Reversible Carbon-Carbon Coupling in FLP Chemistry", B.-H. Xu, G. Kehr, R. Fröhlich, G. Erker, Organometallics 2011, 30, 5080-5083. doi: 10.1021/om200818x.
"o-Diarylphosphinoferrocene Sulfonate Palladium Systems for Nonalternating Ethene-Carbon Monoxide Copolymerization", C. Chen, T. M. J. Anselment, R. Fröhlich, B. Rieger, G. Kehr, G. Erker, Organometallics 2011, 30, 5248-5257. doi: 10.1021/om200628r.
"Dichlorocobalt(II) Complexes Ligated by Bidentate 8-(Benzoimidazol-2-yl)quinolines: Synthesis, Characterization, and Catalytic Behavior towards Ethylene", T. Xiao, P. Hao, G. Kehr, X. Hao, G. Erker, W.-H. Sun, Organometallics 2011, 30, 4847-4853. doi: 10.1021/om2003392.
"Phosphirenium borate zwitterion: formation in the 1,1 carboboration reaction of phosphinylalkynes", O. Ekkert, G. Kehr, R. Fröhlich, G. Erker, Chem. Commun. 2011, 47, 10482-10484. doi: 10.1039/C1CC13008K.
"Frustrated Lewis Pair Reactions With Bis-Acetylenic Substrates: Exploring the Narrow Gap Separating Very Different Competing Reaction Pathways", R. Liedtke, R. Fröhlich, G. Kehr, G. Erker, Organometallics 2011, 30, 5222-5232. doi: 10.1021/om200615n.
"Electronic Control of Frustrated Lewis Pair Behavior: Chemistry of a Geminal Alkylidene-bridged Per-pentafluorophenylated P/B Pair", C. Rosorius, G. Kehr, R. Fröhlich, S. Grimme, G. Erker, Organometallics 2011, 30, 4211-4219. doi: 10.1021/om200569k.
"Bidentate Iron(II) Dichloride Complexes Bearing 8-(Benzoimidazol-2-yl)quinolines: Synthesis, Characterization, and Ethylene Polymerization Behavior", T. Xiao, S. Zhang, G. Kehr, X. Hao, G. Erker, W.-H. Sun, Organometallics 2011, 30, 3658-3665. doi: 10.1021/om2003392.
"Linear Alkane Polymerization on a Gold Surface", D. Zhong, J.-H. Franke, S. K. Podiyanachari, T. Blömker, H. Zhang, G. Kehr, G. Erker, H. Fuchs, L. Chi, Science 2011, 334, 213-216. doi: 10.1126/science.1211836.
"Frustrated Lewis pairs: Reactions with dihydrogen and other 'small molecules' ", G. Erker, C. R. Chim. 2011, 14, 831-841. doi: 10.1016/j.crci.2011.05.008.
"Reaktionen frustrierter Lewis-Paare mit konjugierten Inonen - selektive Hydrierung der Kohlenstoff-Kohlenstoff-Dreifachbindung", B.-H. Xu, G. Kehr, R. Fröhlich, B. Wibbeling, B. Schirmer, S. Grimme, G Erker, Angew. Chem. 2011, 123, 7321-7324. doi: 10.1002/ange.201101051; "Reaction of Frustrated Lewis Pairs with Conjugated Ynones - Selective Metal-Free Hydrogenation of the Carbon-Carbon Triple Bond", B.-H. Xu, G. Kehr, R. Fröhlich, B. Wibbeling, B. Schirmer, S. Grimme, G Erker, Angew. Chem. Int. Ed. 2011, 50, 7183-7186. doi: 10.1002/anie.201101051.
"Capture of NO by a Frustrated Lewis Pair: A New Type of Persistent N-Oxyl Radical", A. J. P. Cardenas, B. J. Culotta, T. H. Warren, S. Grimme, A. Stute, R. Fröhlich, G. Kehr, G. Erker, Angew. Chem. 2011, 123, 7709-7713. doi: 10.1002/ange.201101622.; "Capture of NO by a Frustrated Lewis Pair: A New Type of Persistent N-Oxyl Radical", A. J. P. Cardenas, B. J. Culotta, T. H. Warren, S. Grimme, A. Stute, R. Fröhlich, G. Kehr, G. Erker, Angew. Chem. Int. Ed. 2011, 50, 7567-7571. doi: 10.1002/anie.201101622.
"Organometallic Frustrated Lewis Pair Chemistry", G. Erker, Dalton Trans. 2011, 40, 7475-7483. doi: 10.1039/C1DT10152H.
"Intramolecular Frustrated N / B Lewis Pairs: Structural Features and Chemistry", S. Schwendemann, R. Fröhlich, G. Kehr, G. Erker, Chem. Sci. 2011, 2, 1842-1849. doi: 10.1039/C1SC00124H.
"Chemistry of a Geminal Frustrated Lewis Pair featuring Electron Withdrawing C6F5 Substituents at Both Phosphorus and Boron", A. Stute, G. Kehr, R. Fröhlich, G. Erker, Chem. Commun. 2011, 47, 4288-4290. doi: 10.1039/C1CC10241A.
"Bio-Organometallic Chemistry, ansa-Metallocenes and Frustrated Lewis Pairs: Functional Group Chemistry at the Group 4 Bent Metallocenes", G. Erker, Organometallics 2011, 30, 358-368. doi: 10.1021/om101118a.
"CO2 and Formate Complexes of Phosphine/Borane Frustrated Lewis Pairs", I. Peuser, R. C. Neu, X. Zhao, M. Ulrich, B. Schirmer, J. A. Tannert, G. Kehr, R. Fröhlich, S. Grimme, G. Erker, D. W. Stephan, Chem. Eur. J. 2011, 17, 9640-9650. doi: 10.1002/chem.201100286.
"Reactions of Topologically Related “nacnacH-CN” and “P-nacnacH-CN” Chelate Ligand Systems with HB(C6F5)2", K. Spannhoff, R. Rojas, R. Fröhlich, G. Kehr, G. Erker, Organometallics 2011, 30, 2377-2384. doi: 10.1021/om200116q.
"1,1-Carboboration of 1-Alkynes: A Conceptional Alternative to the Hydroboration Reaction", C. Chen, R. Fröhlich, G. Kehr, G. Erker, Org. Lett. 2011, 13, 62-65. doi: 10.1021/ol102544x.
"P-C Bond Activation Chemistry: Evidence for 1,1-Carboboration Reactions Proceeding with Phosphorous-Carbon Bond Cleavage", O. Ekkert, R. Fröhlich, G. Kehr, G. Erker, J. Am. Chem. Soc. 2011, 133, 4610-4616. doi: 10.1021/ja1110283.
"The Frustrated Lewis Pair Induced Formation of a Pentafulvene [6+4] Cycloaddition Product", C. M. Mömming, G. Kehr, R. Fröhlich, G. Erker, Chem. Commun. 2011, 47, 2006-2007. doi: 10.1039/C0CC04567E.
"Unusual Carbamate-directed CH-Activation at an Anellated Ferrocenophane Framework", T. Voss, R. Fröhlich, G. Kehr, G. Erker, Dalton Trans. 2011, 40, 6984-6991. doi: 10.1039/C0DT01839B.
"Remarkable Structual Variety of Bis(diphenylphosphino)[3]ferrocenophane Gold(I) Complexes", G. Lübbe, G. Kehr, R. Fröhlich, G. Erker, Inorg. Chim. Acta 2011, 396, 223-230. doi: 10.1016/j.ica.2011.01.010.
"Incorporation of organometallic Ru complexes into apo-ferritin cage", Y. Takezawa, P. Böckmann, N. Sugi, Z. Wang, S. Abe, T. Murakami, T. Hikage, G. Erker, Y. Watanabe, S. Kitagawa, T. Ueno, Dalton. Trans. 2011, 40, 2190-2195. doi: 10.1039/C0DT00955E.
"Reactions of Bis(alkynyl)silanes with HB(C6F5)2: Formation of Boryl-substituted Silacyclobutene Derivates", J. Ugolotti, G. Dierker, R. Fröhlich, G. Kehr, G. Erker, J. Organomet. Chem. 2011, 696, 1184-1188. doi: 10.1016/j.jorganchem.2010.09.024.
"Reaction of Aminodihydropentalenes with HB(C6F5)2: The Crucial Role of Dihydrogen Elimination", B.-H. Xu, G. Kehr, R. Fröhlich, S. Grimme. G. Erker, J. Am. Chem. Soc. 2011, 133, 3480–3491. doi: 10.1021/ja1092369.
"Synthesis of [3]ferrocenophane-bridged Cp–amido zirconium complexes ansa-zirconocene complexes and their use in catalytic polymerisation reactions", K. Unverhau, G. Kehr, R. Fröhlich, G. Erker, Dalton Trans. 2011, 40, 3724-3736. doi: 10.1039/C0DT01430C.
"Alkene Addition of Frustrated P/B and N/B Lewis Pairs at the [3]Ferrocenophane Framework", T. Voss, J. B. Sortais, R. Fröhlich, G. Kehr, G. Erker, Organometallics 2011, 30, 584-594. doi: 10.1021/om100949k.
"Autoren-Profil", G. Erker, Angew. Chem. 2010, 122, 4638-4640; Angew. Chem. Int. Ed. 2010, 49, 4536-4538. doi: 10.1002/ange.201000969 .
"Frustrated Lewis Pairs and Ring Opening of THF, Dioxane, and Thioxane", B. Birkmann, T. Voss, S. J. Geier, M. Ullrich, G. Kehr, G. Erker, D. W. Stephan, Organometallics 2010, 29, 5310-5319. doi: 10.1021/om1003896.
"Frustrated Lewis Pair Reactions at the [3]Ferrocenophane Framework", K. Unverhau, G. Lübbe, B. Wibbeling, R. Fröhlich, G. Kehr, G. Erker, Organometallics 2010, 29, 5320-5329. doi: 10.1021/om100378y.
"Carbon-Carbon Bond Cleavage by Strongly Electrophilic Boranes", B.-H. Xu, G. Kehr, R. Fröhlich, G. Erker, Chem. Eur. J. 2010, 16, 12538-12540. doi: 10.1002/chem.201002047.
"Zirconocene Complexes Bearing Novel 3-Dimethylamino-1,2-dihydropentalene Derived Ligand Systems", B.-H. Xu, G. Kehr, R. Fröhlich, E. Nauha, G. Erker, Dalton Trans., 2010, 39, 9973-998. doi: 10.1039/C0DT00515K.
"Electronic Tuning of Thiazolyl-Capped -Conjugated Compounds via a Coordination/Cyclization Protocol with B(C6F5)3", A. Job, A. Wakamiya, G. Kehr, G. Erker, S. Yamaguchi, Org. Lett. 2010, 12, 5470-5473. doi: 10.1021/ol102282x.
"Fullerene-Mediated Activation of Dihydrogen: A New Method of Metal-Free Catalytic Hydrogenation", J. Niemeyer, G. Erker, ChemCatChem. 2010, 2, 499-500. doi: 10.1002/cctc.201000038.
"Developing a Reliable Synthetic Route to cis-1,3-Bridge Disubstituted [3]Ferrocenophane Systems", C. Usener, G. Kehr, R. Fröhlich, B. Wibbeling, C. Mück-Lichtenfeld, G. Erker, Organometallics 2010, 29, 3852-3861. doi: 10.1021/om100501q.
"Carbon-Carbon Bond Activation by 1,1-Carboboration of Internal Alkynes", C. Chen, G. Kehr, R. Fröhlich, G. Erker, J. Am. Chem. Soc 2010, 132, 13594–13595. doi: 10.1021/ja106365j.
"Zirconocene Functional Group Chemistry: Photochemical [4+4] Cycloaddition of Isoprenyl Sidechains to the Bent Metallocene Framework", I. Greger, G. Kehr, G. Erker, Eur. J. Inorg. Chem 2010, 5, 2199 – 2208. doi: 10.1002/ejic.201000432x.
"Dynamic Topochemical Reaction Control - A Principle and its Application in ansa-Metallocene Synthesis", I. Greger, G. Kehr, R. Fröhlich, G. Erker, Organometallics 2010, 29, DOI: 10.1021/om100467y. doi: 10.1021/om100467y.
"Exploring the Limits of Frustrated Lewis Pair Chemistry with Alkynes: Detection of a System that Favors 1,1-Carboboration over Cooperative 1,2-P/B-Addition", C. Chen, F. Eweiner, B. Wibbeling, R. Fröhlich, S. Senda, Y. Ohki, K. Tatsumi, S. Grimme, G. Kehr, G. Erker Chem. Asian J. 2010, 4711–4715. doi: 10.1002/asia.201000189.
"Structure and Dynamic Features of a Frustrated Lewis Pair", K. Axenov, C. M. Mömming, G. Kehr, R. Fröhlich, G. Erker, Chem. Eur. J. 2010, 16, 14069-14073. doi: 10.1002/chem.201001814.
"Salen-ligands based on a planar-chiral hydroxyferrocene moiety: Synthesis, coordination chemistry and use in asymmetric silylcyanation", J. Niemeyer, J. Cloppenburg, R. Fröhlich, G. Kehr, G.Erker J. Organomet. Chem 2010, 695, 1801-1812. doi: 10.1016/j.jorganchem.2010.04.008.
"Cyclizations via Frustrated Lewis Pairs: Lewis Acid Induced Intramolecular Additions of Amines to Olefins and Alkynes", T. Voss, C. Chen, G. Kehr, E. Nauha, G. Erker, D. W. Stephan, Chem. Eur. J. 2010, 16, 3005-3008. doi: 10.1002/chem.200903483.
"Photochemical Isomerisation of Boryl-Substituted Silole Derivatives", J. Ugolotti, G. Kehr, R. Fröhlich, G. Erker, Chem. Commun. 2010, 46, 3016-3018. doi: 10.1039/B927221F.
"Remarkably Variable Reaction Modes of Frustrated Lewis Pairs with Non-Conjugated Terminal Diacetylenes", C. Chen, R. Fröhlich, G. Kehr, G. Erker, Chem. Commun. 2010, 46, 3580-3582. doi: 10.1039/B926830H.
"Cyclische Allene und Cumulene durch kooperative Addition frustrierter Lewis-Paare an konjugierte Enine und Diine", C. M. Mömming, G. Kehr, B. Wibbeling, R. Fröhlich, B. Schirmer, S. Grimme, G. Erker, Angew. Chem. 2010, 122, 2464-2467; doi: 10.1002/ange.200906697. "Formation of Cyclic Allene and Cumulene by Cooperative Addition of Frustrated Lewis Pairs to Conjugated Enynes and Diynes",C. M. Mömming, G. Kehr, B. Wibbeling, R. Fröhlich, B. Schirmer, S. Grimme, G. Erker, Angew. Chem. Int. Ed. 2010, 49, 2414-2417. doi: 10.1002/anie.200906697.
"Frustrated Lewis-pairs: Metal-free Hydrogen Activation and More", D. W. Stephan, G. Erker, Angew. Chem. 2010, 122, 50-81; "Frustrated Lewis-pairs: Metal-free Hydrogen Activation and More", D. W. Stephan, G. Erker, Angew. Chem. Int. Ed. 2010 49, 46-76. doi: 10.1002/anie.200903708.
"Reaction of a Stable Conjugated Primary Enamine with Piers' Borane", I. Peuser, R. Fröhlich, G. Kehr, G. Erker, Eur. J. Inorg. Chem. 2010, 849-853. doi: 10.1002/ejic.200901109.
"Addition Reactions to the Intramolecular Mesityl2P-CH2-CH2-B(C6F5)2 Frustrated Lewis Pair", C. M. Mömming, G. Kehr, R. Fröhlich, G. Erker, Dalton Trans. 2010, 39, 7556-7564. doi: 10.1039/C0DT00015A.
"Salen-Ligands Revisited: Synthesis and Application of a Planar Chiral 'Ferro-Salen' Ligand", J. Niemeyer, G. Kehr, R. Fröhlich, G. Erker, Eur. J. Inorg. Chem. 2010, 680-684. doi: 10.1002/ejic.200901118.
"Metal-free Frustrated Lewis Pair Catalyzed 1,4-Hydrogenation of Conjugated Metallocene Dienamines", S. Schwendemann, T. A. Tumay, K. V. Axenov, I. Peuser, G. Kehr, R. Fröhlich, G. Erker, Organometallics 2010, 4, 1067-1069. doi: 10.1021/om900963p.
"Synthesis of a [(π-Cyano-nacnac)Cp]zirconium Complex and Its Remote Activation for Ethylene Polymerization", A. R. Cabrera, Y. Schneider, M. Valderrama, R. Fröhlich, G. Kehr, G. Erker, R. S. Rojas Organometallics 2010, 29, 6104-6110. doi: 10.1021/om100866t.
"Multilevel supramolecular architectures self-assembled on metal surfaces", D. Zhong, K. Wedeking, T. Blömker, G. Erker, H. Fuchs, L. Chi, ACSNano 2010, 4, 1997-2002. doi: 10.1021/nn100116y.
"Neue Einblicke in den Mechanismus der Diwasserstoff-Aktivierung durch frustrierte Lewis-Paare", S. Grimme, H. Kruse, L. Goerigk, G. Erker, Angew. Chem. 2010, 122, 1444-1447. doi: 10.1002/ange.200905484; "The Mechanism of Dihydrogen Activation by Frustrated Lewis Pairs Revisited", S. Grimme, H. Kruse, L. Goerigk, G. Erker, Angew. Chem. Int. Ed. 2010, 49, 1402-1405. doi: 10.1002/anie.200905484.
"Functional Group Chemistry at the Group 4 Bent Metallocene Framework: [2+2] Cycloaddition of the Parent Bis(vinyl-Cp/vinyl-Ind)ZrCl2 Systems", I. Greger, G. Kehr, R. Fröhlich, G. Erker, Organometallics,2010, 29, 860-866. doi: 10.1021/om900939v.
"Nitrile Insertion into a Boryl-substituted Five-membered Zirconacycloallenoid: Unexpected formation of a Zwitterionic Boratirane Product", J. Ugolotti, G. Kehr, R. Fröhlich, G. Erker, Chem. Commun. 2009, 6572-6573.
"1,2-Olefin Addition of a Frustrated Amine/Borane Lewis Pair", J.-B. Sortais, T. Voss, G. Kehr, R. Fröhlich, G. Erker, Chem. Commun. 2009, 7417-7418.
"Selective Synthesis of the 2-Hydroxyferrocene-aldimine Enantiomers – Extended Planr.Chiral Analogues of the 'Flat' Salicylaldimine Ligand Family", J. Niemeyer, G. Kehr, R. Fröhlihc, G. Erker, Dalton Trans. 2009, 3716-3730.
"Versatile Behavior of Conjugated Diynes with Zirconocene Reactive Species", S. Bredeau, E. Ortega, G. Delmas, P. Richard, R. Fröhlich, B. Donnadieu, G. Kehr, N. Pirio, G. Erker, P. Meunier, Organometallics 2009, 28, 181-187.
"Surface-Mounted Molecular Rotors with Variable Functional Groups and Rotation Radii", D. Zhong, T. Blömker, K. Wedeking, L. Chi, G. Erker, H. Fuchs, Nano Lett. 2009, 9, 4387-4391.
"Catalytic Abilities of [(C6F5)2BR] (R = NC4H4 and NC4H8) Deduced from Experimental and Theoretical Charge-Density Investigations", U. Flierler, D. Leusser, H. Ott, G. Kehr, G. Erker, S. Grimme, D. Stalke, Chem. Eur. J. 2009, 15, 4595-4601.
"Wann bilden wechselwirkende Atome eine chemische Bindung? Spektroskopische und theoretische Analyse an Dideuterophenanthren", S. Grimme, C. Mück-Lichtenfeld, G. Erker, G. Kehr, H. Wang, H. Beckers, H. Willner, Angew. Chem. 2009, 121, 2629-2633; "When do interacting atoms form a chemical bond? Spectroscopic measurements and theoretical analyses of Dideuterophenanthrene", S. Grimme, C. Mück-Lichtenfeld, G. Erker, G. Kehr, H. Wang, H. Beckers, H. Willner, Angew. Chem. Int. Ed. 2009, 48, 2592-2595.
"Bifunctional Molecular Systems with Pendent Bis(pentafluorophenyl)boryl Groups: From Intramolecular CH-Activation to Heterolytic Dihydrogen Splitting", M. Hill, C. Herrmann, P. Spies, G. Kehr, K. Bergander, R. Fröhlich, G. Erker, in “Activating Unreactive Substrates: The Role of Secondary Interactions”, Ed. C. Bolm, F. E. Hahn, Wiley VCH, Weinheim, Germany 2009, pp 209-230; ISBN: 978-3-527-31823-0.
"Metal-free dihydrogen activation chemistry: structural and dynamic features of intramolecular P/B pairs", P. Spies, G. Kehr, K. Bergander, B. Wibbeling, R. Fröhlich, G. Erker, Dalton Trans. 2009, 1534-1541.
"Bis("ferrocene-saliminato") Group 4 Metal Complexes: Synthesis, Structural Features and Use in Homogenous Ziegler-Natta Polymerization Catalysis", J. Niemeyer, G. Kehr, R. Fröhlich, G. Erker, Dalton Trans. 2009, 3731-3741.
"Five-membered Zirconacycloallenoids – Synthesis and Characterization of Members of a Unique Class of Internally Metal-stabilized Bent Allenoid Compounds", J. Ugolotti, G. Kehr, R. Fröhlich, S. Grimme, G. Erker, J. Am. Chem. Soc. 2009, 131, 1996-2007.
"Manipulating surface diffusion ability of single molecules by scanning tunneling microscopy", D. Y. Zhong, J. Franke, T. Brömker, G. Erker, L. F. Chi, H. Fuchs, Nano Lett. 2009, 9, 132-136.
"Catalytic hydrogenation of sensitive organometallic compounds by antagonistic N/B Lewis Pair catalyst systems", K. V. Axenov, G. Kehr, R. Fröhlich, G. Erker, J. Am. Chem. Soc. 2009, 131, 3454-3455.
"Reaction of Bis(alkynyl)silanes with Tris(pentafluorophenyl)borane: Synthesis of Bulky Silole Derivatives by Means of 1,1-Carboboration under Mild Reaction Conditions", G. Dierker, J. Ugolotti, G. Kehr, R. Fröhlich, G. Erker, Adv. Synth. Catal. 2009, 351, 1080-1088.
"Facile Cyclometalation Reactions of Cp-Zirconium Complexes with Weakly Lewis Acidic Pendent Boron Functionalities", M. Emmert, G. Kehr, R. Fröhlich, G. Erker, Chem. Eur. J. 2009, 15, 8124 – 8127.
"Functional Group Chemistry at the Group 4 Bent Metallocene Frameworks: Formation and “Metal-free" Catalytic Hydrogenation of Bis(imino-Cp)zirconium Complexes”, K. V. Axenov, G. Kehr, R. Fröhlich, G. Erker, Organometallics 2009, 28, 5148-5158.
"Reactions of an Intramolecular Frustrated Lewis Pair with Unsaturated Substrates: Evidence for a Concerted Olefin Addition Reaction", C. M. Mömming, S. Frömel, G. Kehr, R. Fröhlich, S. Grimme, G. Erker, J. Am. Chem. Soc. 2009, 131, 12280-12289.
"Reversible, nicht metallunterstützte Bindung von Kohlendioxid durch frustrierte Lewis-Paare", C. M. Mömming, E. Otten, G. Kehr, R. Fröhlich, S. Grimme, D. W. Stephan, G. Erker, Angew. Chem. 2009, 121, 6770-6773; "Reversible Metal-free Carbon Dioxide Binding by Frustrated Lewis Pairs", C. M. Mömming, E. Otten, G. Kehr, R. Fröhlich, S. Grimme, D. W. Stephan, G. Erker, Angew. Chem. Int. Ed. 2009, 48, 6643-6646. [A. Pichon, Nature Chemistry, 2009, doi:10.1038/nchem.324]
"Remarkable Product Diversity in the 'Self-organized' Reaction of Deprotonated Acetonitrile with Chlorophosphines", K. Spannhoff, N. Kuhl, G. Kehr, R. Fröhlich, G. Erker, J. Am. Chem. Soc. 2009, 131, 17836-17842.
"Synthesis and Reactions of Ferrocenyl-capped Long-chain Alkynes", T. Blömker, P. Böckmann, G. Kehr, R. Fröhlich, G. Erker, Z. Naturforsch. 2009, 64b, 587-594.
"Evidence for a Rapid Degenerate Hetero-Cope Type Rearrangement in Cp*W(S2)S-CH2-CH=CH2", F. Eweiner, S. Senda, K. Bergander, C. Mück-Lichtenfeld, R. Fröhlich, G. Kehr, K. Tatsumi, G. Erker, Chem. Asian J. 2009, 4, 1830-1833.
"Catalytic hydrogenation of C=O and C=N bonds via heterolysis of H2 mediated by metal–sulfur bonds of rhodium and iridium thiolate complexes", M. Sakamoto, Y. Ohki, G. Kehr, G. Erker, K. Tatsumi, J. Organomet. Chem. 2009, 694, 2820-2824.
"Synthesis of an Amino-Functionalized ansa-Zirconocene by Intramolecular Photochemical Enamine [2+2]Cycloaddition", T. A. Tumay, G. Kehr, R. Fröhlich, G. Erker, Organometallics 2009, 28, 4513-4518.
"Synthesis and Characterization of [3]Ferrocenophane Derived P,P-Chelate Ligand Gold Complexes Featuring an Orrophilic Interaction", G. Lübbe, G. Kehr, R. Fröhlich, G. Erker, Z. Naturforsch. 2009, 64b, 1413-1422.
"Ring-closing metathesis of sterically congested functionalized zirconocenes–ethene polymerization catalysts derived from related bridged and open metallocenes", T. A. Tumay, G. Kehr, R. Fröhlich, G. Erker, Dalton Trans. 2009, 8923-8928.
"Structural Importance of Secondary Interactions in Molecules: Origin of Unconventional Conformations of Phosphine-Borane Adducts", P. Spies, R. Fröhlich, G. Kehr, G. Erker, S. Grimme, Chem. Eur. J., 2008, 14, 333-343. (corrigendum: Chem. Eur. J., 2008, 14, 779.)
"Functional Group Chemistry at the Zirconocene Backbone: Addition Reactions to Pendent Alkynyl Substituents" L. Chen, G. Kehr, R. Fröhlich, G. Erker, Eur. J. Inorg. Chem. 2008, 73-83.
"(Amidomethyl)pyridine Zirconium and Hafnium Complexes: Synthesis and Structural Characterization", K. Nienkemper, G. Kehr, S. Kehr, R. Fröhlich, G. Erker, J. Organomet. Chem. 2008, 693, 1572-1589.
"Functionalized Alkali Metal Cyclopentadienides: Structural and Chemical Features", G. Erker, G. Kehr, R. Fröhlich, Organometallics, 2008, 27, 3-14.
"(N-Arylaminomethyl)pyridine-N-oxides: Synthesis and Characterization of Potential Ligand Systems and the Formation of their N,O-Chelate Aluminum Complexes", K. Nienkemper, G. Kehr, S. Kehr, R. Fröhlich, G. Erker J. Organomet. Chem., 2008, 693, 3063-3073.
"Structural Features of (Cp–PPh2AuCl)2ZrCl2: Exploring the Limits of Aurophilic Interactions", M. Moriya, R. Fröhlich, G. Kehr, G. Erker, S. Grimme, Chem. Asian J., 2008, 3, 753-758.
"Metallacyclische Fünfring-Allenoide: Synthese und Struktur stabiler stark verzerrter cyclischer Allen-Derivate", J. Ugolotti, G. Dierker, G. Kehr, R. Fröhlich, S. Grimme, G. Erker, Angew. Chem., 2008, 120, 2662-2665; "Five-membered Metallacyclic Allenoids: Synthesis and Structure of Remarkably Stable Strongly Distorted Cyclic Allene Derivatives", J. Ugolotti, G. Dierker, G. Kehr, R. Fröhlich, S. Grimme, G. Erker, Angew. Chem. Int. Ed., 2008, 47, 2622-2625.
"Reactions of Pendant Boryl Groups at Cp-Metal Complexes: Heterocyclic Ring Annelation at a CpIr-System", C. Herrmann, G. Kehr, R.. Fröhlich, G. Erker, Eur. J. Inorg. Chem., 2008, 2273-2277.
"Bis(diphenylphosphino)acetonitrile oxides, -sulfides and –imines: their formation and structural features, and the remarkable structures of two lithiated derivatives", L. Braun, G. Kehr, R. Fröhlich, G. Erker, Inorg. Chim. Acta, 2008, 361, 1668-1675.
"Structural Features of Lithio[3]ferrocenophane Systems Bearing Stabilizing Dimethylamino Substituents", C. Chen, R. Fröhlich, G. Kehr, G. Erker, Organometallics, 2008, 27, 3248-3253.
"Control of the Coordination Structure of Organometallic Palladium Complexes in an apo-Ferritin Cage", S. Abe, J. Niemeyer, M Abe, Y. Takezawa, T. Ueno, T. Hikage, G. Erker, Y. Watanabe, J. Am. Chem. Soc., 2008, 130, 10512-10514.
"Noncovalent insertion of ferrocenes into the protein shell of apo-ferritin", J. Niemeyer, S. Abe, T. Hikage, T. Ueno, G. Erker, Y. Watanabe, Chem. Commun., 2008, 6519-6521.
"Chemical Behavior of a Pair of (COD)CpRh and -Ir Complexes with Pendent Peripheral –B(C6F5)2 Groups", C. Herrmann, G. Kehr, R. Fröhlich, G. Erker, Organometallics 2008, 2328-2336.
"Functionalized phosphorus analogues of the β-diketiminato ligand systems: Bis(N-arylphosphinimino)acetonitrile-derived complexes of rhodium and iridium", K. Spannhoff, G. Kehr, S. Kehr, R. Fröhlich, G. Erker, Dalton Trans. 2008, 3339-3344.
"Quart-Feproline: Synthesis of a Very Rigid [3]Ferrocenophane Derived Artificial Amino Acid", L. Tebben, G. Kehr, R. Fröhlich, G. Erker, Eur. J. Inorg. Chem, 2008, 2654-2658.
"Ferrocene-Derived Bioorganometallic Chemistry: Preparation of a [3]Ferrocenophane γ-Amino Acid for Use in Peptide Synthesis", L. Tebben, K. Bussmann, M. Hegemann, G. Kehr, R. Fröhlich, G. Erker, Organometallics, 2008, 27, 4269-4272.
"Heterolytic cleavage of dihydrogen by frustrated Lewis pairs derived from α-dimesitylphosphinoferrocenes and B(C6F5)3", D. P. Huber, S. Tanino, G. Kehr, K. Bergander, R. Fröhlich, Y. Ohki, K. Tatsumi, G. Erker, Organometallics, 2008, 27, 5279–5284.
"Metal-Free Catalytic Hydrogenation of Enamines, Imines and Conjugated Phosphinoalkenylboranes", P. Spies, S. Schwendemann, S. Lange, G. Kehr, R. Fröhlich, G. Erker, Angew. Chem. Int. Ed., 2008, 47, 7543-7546. "Metallfreie katalytische Hydrierung von Enaminen, Iminen und Phosphinoalkenyl-boranen", P. Spies, S. Schwendemann, S. Lange, G. Kehr, R. Fröhlich, G. Erker, Angew. Chem., 2008, 120, 7654-7657.
"Bis(iminoethyl)pyridine Systems with a Pendant Alkenyl Group – Part A: Cobalt and Iron Complexes and their Catalytic Behavior", C. Wallenhorst, G. Kehr, H. Luftmann, R. Fröhlich, G. Erker, Organometallics, 2008, 27, 6547 – 6556.
"Unsymmetrical Bis(iminoethyl)pyridine Metal Complexes with a Pendant Alkenyl Substituent – Part B: Internal Olefin Coordination to Ruthenium", C. Wallenhorst, G. Kehr, R. Fröhlich, G. Erker, Organometallics, 2008, 27, 6557 – 6564.
"Mastering the Third Dimension of Salicylaldimine-type Ligand Systems: Development of a Convenient Route to Bis("ferrocene-saliminato")zirconium Chemistry", J. Niemeyer, G. Kehr, R. Fröhlich, G. Erker, Chem. Eur. J., 2008, 14, 9499-9502.
"Heterolytic dihydrogen activation with the 1,8-bis(diphenylphosphino)-naphthalene/B(C6F5)3 pair and its application for metal-free catalytic hydrogenation of silyl enol ethers", H. Wang, R. Fröhlich, G. Kehr, G. Erker, Chem. Commun., 2008, 5966-5968.
"Crystal-smectic E mesophases in a series of 2-(4-n-alkylphenyl)indenes ", S. M. Schultz, G. Kehr, R. Fröhlich, G. Erker, N. Kapernaum, C. Hägele, F. Giesselmann, S. Laschat, R. Judele, A. Baro, Liquid Crystals 2007, 34, 919-926.
"Structures and Stability of Ferrocene Derivate Monolayers on Ag(110): Scanning Tunneling Microscopy Study", R. F. Dou, D. Y. Zhong, W. C. Wang, K. Wedeking, G. Erker, L. Chi, H. Fuchs, J. Phys. Chem. C 2007, 111, 12139-12144.
"Rapid intramolecular heterolytic dihydrogen activation starting from a four-membered heterocyclic phosphane-borane adduct", P. Spies, G. Erker, G. Kehr, R. Fröhlich, S. Grimme, D. W. Stephan, Chem. Commun. 2007, 5072-5074.
"Patterned nucleation control in vacuum deposition of organic molecules", W. C. Wang, D. Y. Zhong, J. Zhu, F. Kalischewski, R. F. Dou, K. Wedeking, Y. Wang, A. Heuer, H. Fuchs, G. Erker, L. F. Chi, Phys. Rev. Lett. 2007, 98, 225504.
"Remarkable Dichotomy of Oligomeric Chain Structures of Dilithium(amidoalkyl-cyclopentadienide) Systems Li2[C5H4-CHR-NAr]", V. V. Kotov, C. Wang, G. Kehr, R. Fröhlich, G. Erker, Organometallics 2007, 26, 6258-6262.
"Oligoethylene-bridged diferrocene on Ag(110): Monolayer structures and adsorbate-induced faceting", D. Y. Zhong, W. C. Wang, R. F. Dou, K. Wedeking, G. Erker, L. F. Chi, H. Fuchs, Physical Review B 2007, 76, 2054281-2054286.
"Formation, Structural and Dynamic Features of Atropisomeric 2-Iminoacyl Zirconium Complexes", P. Spies, G. Kehr, S. Kehr, R. Fröhlich, G. Erker, Organometallics 2007, 26, 5612-5620.
"Salt Metathesis Route to Pyridine Dicarboxamide-derived Chelate Pincer Ligand Ruthenium Carbene Complex Isomers", C. Wallenhorst, K.V. Axenov, G. Kehr, J. S. M. Samec, R. Fröhlich, G. Erker, Z. Naturforsch. 2007, 62b, 783-790.
"Ein 1,8-Naphthylen-verbrücktes Bis(indenyl)zink-THF-Addukt: Synthese und Strukture eines ansa-Zinkocen-Derivates", H. Wang, G. Kehr, R. Fröhlich, G. Erker, Angew. Chem. 2007, 119, 4992-4995; "A 1,8-Naphthylene-Bridged Bis(indenyl)zinc THF Adduct: Formation and Structure an ansa-Zincocene Derivative", H. Wang, G. Kehr, R. Fröhlich, G. Erker, Angew. Chem. Int. Ed. 2007, 46, 4905-4908.
"Preferred Phosphorus Ylide Formation upon Alkylation of Lithio-bis(diphenylphosphino)acetonitrile", L. Braun, G. Kehr, T. Blömker, R. Fröhlich, G. Erker, 2Eur. J. Inorg. Chem. 22007, 3083-3090.
"Group 4 Metallocenes in Bioorganometallic Chemistry", G. Erker, J. Organomet. Chem. 2007, 692, 1187-1197.
"Bis(diphenylphosphino)acetonitrile: Synthesis, Ligand Properties and Application in Catalytic Carbon-Carbon Coupling", L. Braun, P. Liptau, G. Kehr, J. Ugolotti, R. Fröhlich, G. Erker, Dalton Trans. 2007, 1409-1415.
"Oligomeric Supersandwich Structure of a Lithium Enamino-Cyclopentadienide", V. V. Kotov, G. Kehr, R. Fröhlich, G. Erker, Z. Naturforsch. 2006, 61b, 1319-1322.
"Polymerization Special Feature: Ansa-metallocene polymerization catalysts derived from [2+2]cycloaddition reactions of bis(1-methylethenyl-cyclopentadienyl)zirconium systems", J. Paradies, G. Kehr, R. Fröhlich, G. Erker, PNAS 2006, 103, 15333-15337.
"Insertion Reactions at Cyclobutylene-Bridged ansa-Metallocene Complexes: A Quest for the Influence of Covering Phenylene Units", L. Chen, W.-L. Nie, J. Paradies, G. Kehr, R. Fröhlich, K. Wedeking, G. Erker, Organometallics 2006, 25, 5333-5344.
"Stereo-electronic interaction in complex molecules: cyclopropyl conjugation with Lewis acidic centres across connecting carbon-carbon triple bonds", G. Dierker, G. Kehr, R. Fröhlich, G. Erker, S. Grimme, Chem. Commun. 2006, 3912-3914.
"[2+2]Cycloaddition and Subsequent meso/rac ansa-Metallocene Interconversion by Photolysis of a Bis(1,3-dialkenylcyclopentadienyl)zirconium Complex", J. Paradies, R. Fröhlich, G. Kehr, G. Erker, Organometallics 2006, 25, 3920-3925.
"Product Diversity in the Reaction of [(norbornadiene){CpP(iPr)2}Rh] with Alkyl Iodides", E. Ortega, N. Kleigrewe, G. Kehr, G. Erker, R. Fröhlich, Eur. J. Inorg. Chem. 2006, 3769-3774.
"Carbohydrate-metallocene conjugates: selective formation of a zirconadioxacyclopentane-type dimer from the reaction of a bis(enolate)ZrCp2 reagent with a glucofuranoside derivative", B. Meyer zu Berstenhorst, G. Erker, G. Kehr, R. Fröhlich, Dalton Trans. 2006, 3200-3203.
"Functional-Group Attachment and Interconversion at a Chiral [3]Ferrocenophane Framework", C. Nilewski, M. Neumann, L. Tebben, R. Fröhlich, G. Kehr, G. Erker, Synthesis 2006, 13, 2191-2200.
"Ansa-Metallocenes by Intramolecular Ring Closure Reactions - Syntheses and Applications" G. Erker, Macromol. Symp. 2006, 236, 1-13.
"Bildung eines metallorganischen Ladderan-Derivats durch eine dynamische topochemische Reaktion", J. Paradies, I. Greger, G. Kehr, G. Erker, K. Bergander, R. Fröhlich, Angew. Chem. 2006, 118, 7792-7795; "Formation of an Organometallic Ladderane Derivative by Dynamic Topochemical Reaction Control", J. Paradies, I. Greger, G. Kehr, G. Erker, K. Bergander, R. Fröhlich, Angew. Chem. Int. Ed. Engl. 2006, 45, 7630-7633.
"Formation of a Dynamic 2(O,N)-Hydroxylaminato Zirconocene Complex by Nitrosoarene Insertion into a Zr-C -Bond", S. A. Cummings, R. Radford, G. Erker, G. Kehr, R. Fröhlich, Organometallics 2006, 25, 839-842.
"Die Chemie funktioneller Gruppen bei Organolithium-Verbindungen: photochemische [2+2] Cycloaddition von Alkenyl-substituierten Lithium-Cyclopentadieniden", J. Paradies, G. Erker, R. Fröhlich, Angew. Chem. 2006, 118, 3150-3153; "Functional-Group Chemistry of Organolithium Compounds: Photochemical [2+2] Cycloaddition of Alkenyl-Substituted Lithium Cyclopentadienides" J. Paradies, G. Erker, R. Fröhlich, Angew. Chem. Int. Ed. Engl. 2006, 45, 3079-3082.
"Development of a convenient new synthetic route to [3]ferrocenophanones", L. Tebben, M. Neumann, G. Kehr, R. Fröhlich, G. Erker, S. Losi, P. Zanello, Dalton Trans., 2006, 1715-1720; Chem. Sci. 2006, 3, C29.
"Imidazolin-2-iminato titanium complexes: synthesis, structure and use in ethylene polymerization catalysis", M. Tamm, S. Randoll, E. Herdtweck, N. Kleigrewe, G. Kehr, G. Erker, B. Rieger, Dalton Trans. 2006, 459-467.
"Tetradecylferrocene: Ordered Molecular Array of an Organometallic Amphiphile in the Crystal and in a Two-dimensional Assembled Structure on a Surface", K. Wedeking, Z. Mu, G. Kehr, R. Fröhlich, G. Erker, L. Chi, H. Fuchs, Langmuir 2006, 22, 3161-3165.
"Syntheses and reactions of fulvene-derived substituted aminoalkyl-Cp and phosphinoalkyl-Cp-Group 4 metal complexes", G. Erker, Coord. Chem. Rev. 2006, 250, 1056-1070.
"Chelate [2-(Iminoethyl)pyridine N-oxide]metal Complexes - Synthesis and Structural Comparison with Their Chemically Related 2-(Iminoethyl)pyridine-Derived Systems", K. Nienkemper, V. V. Kotov, G. Kehr, G. Erker, R. Fröhlich, Eur. J. Inorg. Chem. 2006, 366-379.
"Group 4 bent metallocenes and functional groups - Finding convenient pathways in a difficult terrain", G. Erker, G. Kehr, R. Fröhlich, Coord. Chem. Rev. 2006, 250, 36-46.
"Oligoethylene Chains Terminated by Ferrocenyl End Groups: Synthesis, Structural Properties and Two-Dimensional Self-Assembly on Surfaces", K. Wedeking, Z. Mu, G. Kehr, J. Cano Sierra, C. Mück Lichtenfeld, S. Grimme, G. Erker, R. Fröhlich, L. Chi, W. Wang, D. Zhong, H. Fuchs, Chem. Eur. J., 2006, 12, 1618-1628.
"Reaction of Rosenthal's Zirconacyclocumulenes with Chlorophosphines", P. Spieß, G. Kehr, R. Fröhlich, G. Erker, S. Grimme, C. Mück-Lichtenfeld, Organometallics 2005, 24, 4742-4746.
"Formation of chiral ionic liquids and imidazol-2-ylidene metal complexes from the proteinogenic aminoacid L-histidine", F. Hannig, G. Kehr, R. Fröhlich, G. Erker, J. Organomet. Chem. 2005, 690, 5959-5972.
"Tris(pentafluorophenyl)borane: a special boron Lewis acid for special reactions." G. Erker, Dalton Trans. 2005, 11, 1883-1890.
"Building bridges: ansa-metallocene construction by carbon-carbon coupling reactions at preformed Group 4 bent metallocene frameworks", G. Erker, Polyhedron 2005, 24, 1289-1297.
"Structural Features of Titanium Complexes of Salicylaldiminato Derivatives of Amino Acids", J. Müller, G. Kehr, R. Fröhlich, G. Erker, Eur. J. Inorg. Chem. 2005, 2836-2841.
"The (butadiene)zirconocene route to active homogeneous olefin polymerization catalysts", G. Erker, G. Kehr, R. Fröhlich, J. Organomet. Chem. 2005, 690, 6254-6262.
"Chelate Bis(imino)pyridine Cobalt Complexes: Synthesis, Reduction, and Evidence for the Generation of Ethene Polymerization Catalysts by Li+-Cation Activation", N. Kleigrewe, W. Steffen, T. Blömker, G. Kehr, R. Fröhlich, B. Wibbeling, G. Erker, J.C. Wasilke, G. Wu, G. C. Bazan, J. Am. Chem. Soc. 2005, 127, 13955-13968.
"Preparation of Enantiomerically Pure [3]Ferrocenophane-Based Chelate Bis-Phosphane Ligands and Their Use in Asymmetric Alternating Carbon Monoxide/Propene Copolymerization", P. Liptau, L. Tebben, G. Kehr, R. Fröhlich, G. Erker, F. Hollmann, B. Rieger, Eur. J. Org. Chem. 2005, 9, 1909-1918.
"Branched wires of CdTe nanocrystals using amphiphilic molecules as templates" L. Zhang, N. Gaponik, J. Mueller, U. Plate, H. Weller, G. Erker, H. Fuchs, A. L. Rogach, L. Chi, Small 2005, 1, 524-527.
"Ruthenium Carbene Complexes Featuring a Tridentate Pincer-type Ligand", J.-C. Wasilke, G. Wu, X. Bu, G. Kehr, G. Erker, Organometallics 2005, 24, 4289-4297.
"Synthesis, Structural Features, and Formation of Organometallic Derivates of C1-Bridged Cp/Amido Titanium and Zirconium "CpCN-Constrained Geometry" Systems", C. Wang, G. Erker, G. Kehr, K. Wedeking, R. Fröhlich, Organometallics 2005, 24, 4760-4773.
"Chemistry of Metal-Metal-Bonded Early-Late Heterobimetallics: Cooperative Reactions of Functional Groups at a Persistent Organometallic Zr-Rh Framework." C. Cornelissen, G. Erker, G. Kehr, R. Froehlich, Organometallics 2005, 24, 214-225.
"Bis(enamino-Cp) Group 4 metal complex chemistry: Developing a Mannich-type carbon-carbon coupling reaction at the bent metallocene framework." S. Knueppel, C. Wang, G. Kehr, R. Froehlich, G. Erker, J. Organomet. Chem. 2005, 690, 14-32.
"Bioorganometallic Chemistry: Reactions of Methyltitanocene Cation Complexes with a Singly Deprotected Methyl Glucopyranoside", B. Meyer zu Berstenhorst, G. Erker, G. Kehr, J.-C. Wasilke, J.Müller, H. Redlich, J. Pyplo-Schnieders, Eur. J. Inorg. Chem. 2005, 1, 92-99.
"Formation and reactions of metal metal bonded heterobimetallic (C5H4-PR2)-bridged (Zr Ir) and (Zr Rh) complexes: evidence for the participation of metal hydride intermediates", C. Cornelißen, G. Erker, G. Kehr, R. Fröhlich, Dalton Trans. 2004, 4059-4063.
"Facile [N]C H Activation at a (P,N) Chelate [3]Ferrocenophane Ruthenium System", P. Liptau, D. Carmona, L. A. Oro, F. J. Lahoz, G. Kehr, G. Erker, Eur. J. Inorg. Chem. 2004, 4586-4590.
"Some selected chapters from the (butadiene)zirconocene story", G. Erker, G. Kehr, R. Fröhlich, J. Organomet. Chem. 2004, 689, 4305-4318.
"Structural and Spectroscopic Evidence for Intramolecular Agostic M···H-C and Dative Zr<-F-C(ortho) Interactions in the Zwitterionic Group 4 Metal Betaine Complexes, [(C5H4)SiMe2(N-t-Bu)]M(+)(h-C4H6)(B(C6F5)3, M = Ti, Zr", F. Hannig, R. Fröhlich, K. Bergander, G. Erker, J. L. Petersen, Organometallics 2004, 23, 4495-4502.
"The Synthesis of Optically Active Primary Amino[3]ferrocenophanes", L. Tebben, G. Kehr, R. Fröhlich, G. Erker, Synthesis, 2004, 12, 1971-1976.
"Exploring CH-Activation Pathways in Bifunctional Zirconocene/Borane Systems", M. Hill, G. Erker, G. Kehr, R. Fröhlich, O. Kataeva, J. Am. Chem. Soc. 2004, 126, 11046-11057.
"Generation of bis(iminoalkyl)pyridine cobalt(I) cations under alkyl group free conditions that polymerize ethene", W. Steffen, T. Blömker, N. Kleigrewe, G. Kehr, R. Fröhlich, G. Erker, Chem. Commun. 2004, 1188-1189.
"Evidence for a Carbon Carbon Coupling Reaction to Proceed through a Planar-Tetracoordinate Carbon Intermediate", G. Erker, S. Venne-Dunker, G. Kehr, N. Kleigrewe, R. Fröhlich, C. Mück-Lichtenfeld, S. Grimme, Organometallics 2004, 23, 4391-4395.
"An Internally Coordinated Metalla[14]-crown-5 System With a Pentagonal-dipyrimadal Coordination Geometry of the Central Titanium Atom", G. Unger, G. Erker, G. Kehr, R. Fröhlich, Z. Naturforsch. 2004, 917-920.
"Formation of a bifunctional zirconocene complex that favours intramolecular -B(C6F5)2 addition to a Cp ring over s-ligand abstraction", M. Hill, G. Kehr, G. Erker, O. Kataeva, R. Fröhlich, Chem. Commun. 2004, 1020-1021.
"Developing some functional group chemistry at the Group 4 bent metallocene frameworks", G. Erker, G. Kehr, R. Fröhlich, J. Organomet. Chem. 2004, 689, 1402-1412.
"Metallocene Carbene Chemistry", G. Erker, G. Kehr, R. Fröhlich, Russ. Chem. Bull., Int. Ed., Vol. 53, 2004, 5, 1007-1019; Izv. Akad. Nauk., Ser. Khim. 2004, 5, 965-976.
"A Fulvene Route to Group 4 Metallocene Complexes Bearing 4,7-Bis(dimethylamino)-Substituted Indenyl Ligands", J. Cano Sierra, K. Kunz, G. Kehr, R. Fröhlich, G. Erker, Eur. J. Inorg. Chem. 2004, 2260-2265.
"Synthesis of Alkylidene-Bridged Cp/Phosphido Group 4 Metal Complexes Precursors of the "(CpCPR)M Constrained-Geometry" Catalyst Family", S. Bredeau, G. Altenhoff, K. Kunz, S. Döring, S. Grimme, G. Kehr, G. Erker, Organometallics 2004, 23, 1836-1844.
"Self-Organized Complex Patterning: Langmuir Blodgett Lithography", S. Lenhert, L. Zhang, J. Mueller, H. P. Wiesmann, G. Erker, H. Fuchs, L. Chi, Adv. Mater. 2004, 7, 619-624.
"The (Butadiene)zirconocenes and Related Compounds", G. Erker, G. Kehr, R. Fröhlich, Adv. Organomet. Chem. 2004, 51, 109-162.
"Responsive Iron Neighboring Group Participation in Amino Substituent-Stabilized [3]Ferrocenophane a-Carbenium Ions: A Combined Theoretical and Experimental Study", P. Liptau, M. Neumann, G. Erker, G. Kehr, R. Fröhlich, S. Grimme, Organometallics 2004, 23, 21-25.
"(Butadiene)metallocene/B(C6F5)3 Pathway to Catalyst Systems for Stereoselective Methyl Methacrylate Polymerization: Evidence for an Anion Dependent Metallocene Catalyzed Polymerization Process", J. W. Strauch, J.-L. Fauré, S. Bredeau, C. Wang, G. Kehr, R. Fröhlich, H. Luftmann, G. Erker, J. Am. Chem. Soc. 2004, 126, 2089-2104.
"Formation of a Unique ansa-Metallocene Framework by Intramolecular Photochemical [2+2] Cycloaddition of Bis(2-alkenylindenyl)zirconium Complexes", W.-L. Nie, G. Erker, G. Kehr, R. Fröhlich, Angew. Chem. Int. Ed. Engl. 2004, 43, 310-313. "Bildung eines neuartigen ansa-Metallocen-Gerüsts durch intramolekulare photochemische [2+2]-Cycloaddition von Bis(2-alkenylindenyl)zirconium Komplexen", Angew. Chem. 2004, 116, 313-317.
"Organic Functional Group Transformations in the Periphery of a Group-4 Metallocene Complex: 2H-Pyrrole Formation at a Pendant Boron Lewis Acid", M. Hill, G. Kehr, R. Fröhlich, G. Erker, Eur. J. Inorg. Chem. 2003, 3583-3589.
"Generation and Structural Characterization of [(Imidazol-2-ylidene)HfCl5]-Anion/Imidazolium Cation Salt", M. Niehues, G. Kehr, R. Fröhlich, G. Erker, Z. Naturforsch., 2003, 58b, 1005-1008.
"Formation of Dinuclear Titanium and Zirconium Complexes by Olefin Metathesis – Catalytic Preparation of Organometallic Catalyst Systems", J. Cano Sierra, D. Hüerländer, M. Hill, G. Kehr, G. Erker, R. Fröhlich, Chem. Eur. J. 2003, 9, 3618-3622.
"Preparation of chelate bis(imine)nickel allyl systems by reaction of their corresponding butadiene complexes with electrophiles", J. W. Strauch, G. Kehr, G. Erker, J. Organomet. Chem. 2003, 683, 249-260.
"Preparation of Optically Active a-Amino[3]ferrocenophanes – Building Blocks for Chelate Ligands in Asymmetric Catalysis", P. Liptau, L. Tebben, G. Kehr, B. Wibbeling, R. Fröhlich, G. Erker, Eur. J. Inorg. Chem. 2003, 3590-3600; 4261.
"Stereochemistry of [4+2] Cycloadditions of Perfluorinated Selenocarbonyls to 1,3-Dienes", H. Blau, J. Grobe, G. Erker, J. Lauterwein, Z. Anorg. Allg. Chem. 2003, 629, 103-108.
"Formation of a Chelate Bis(phosphino)[3]ferrocenophane Ligand and Its Use in Palladium-Catalyzed Alternating CO/Ethene Copolymerization", P. Liptau, T. Seki, G. Kehr, A. Abele, R. Fröhlich, G. Erker, S. Grimme, Organometallics 2003, 22, 2226-2232.
"Preparation and characterization of some structural variants of Cp*Ti(1,2-propandiolato) complexes", A. Snell, G. Kehr, O. Kataeva, R. Fröhlich, G. Erker, J. Organomet. Chem. 2003, 687, 171-177.
"Structural Features of a Sulfur-Containing Group 4 Metalla[11]-crown-4 Derivative", A. Snell, G. Kehr, B. Wibbeling, R. Fröhlich, G. Erker, Z. Naturforsch. 2003, 58b, 838-842.
"Synthesis and structural features of [(C5H4-CMe2NMe2)2TiCl], a bis(cyclopentadienyl)Ti(III) complex with internal dimethylamino coordination", V. V. Kotov, R. Fröhlich, G. Kehr, G. Erker, J. Organomet. Chem. 2003, 676, 1-7.
"Formation of a Doubly C,N-Bridged Six-Membered Metallacyclic Bis[(2-imidazolyl)zirconocene] Dication", D. Vagedes, G. Erker, G. Kehr, R. Fröhlich, S. Grimme, C. Mück-Lichtenfeld, Z. Naturforsch. 2003, 58b, 305-310.
"Selective Intramolecular [N]CH Activation in Bis(1-ethenylamino-Cp)zirconium - Butadiene Complexes and Related Systems", S. Venne-Dunker, G. Kehr, R. Fröhlich, G. Erker, Organometallics 2003, 22, 948-958.
"The (butadiene)metal complex/B(C6F5)3 pathway to homogeneous single component Ziegler-Natta catalyst systems", G. Erker, Chem. Commun. 2003, 1469-1476.
"Molecular-Template-Mediated Chemical Decoration", S. Hoeppener, J. Wonnemann, L. Chi, G. Erker, H. Fuchs, Chem. Phys. Chem. 2003, 4, 490-494.
"Synthesis and Dynamic Features of (Chloro)zirconocene Cations Stabilised by Pendant (Diarylphosphanyl)alkyl and (Dimethylamino)alkyl Substituents at their Cyclopentadienyl Ring Systems", S. Döring, V. V. Kotov, G. Erker, G. Kehr, K. Bergander, O. Kataeva, R. Fröhlich, Eur. J. Inorg. Chem. 2003, 1599-1607.
"Tris(pentafluorophenyl)borane adducts of substituted imidazoles: conformational features and chemical behavior upon deprotonation", D. Vagedes, G. Erker, G. Kehr, K. Bergander, O. Kataeva, R. Fröhlich, S. Grimme, C. Mück-Lichtenfeld, Dalton Trans. 2003, 1337-1344.
"Furyl-Substituted Group-4 Metallocene Catalysts for Elastomeric Polypropylene Formation – The Role of the Remote Substituents", T. Dreier, G. Erker, Isr. J. Chem. 2002, 42, 343-352.
"Synthesis of a Dinuclear m-(h2-Thioaldehyde)zirconocene Cation Complex", S. Courtenay, S. Smith, E. Hollink, U. Blaschke, G. Kehr, R. Fröhlich, G. Erker, D. W. Stephan, Z. Naturforsch. 2002, 1184-1188.
"Structural characterization of Group 4 transition metal halide bis-Arduengo carbene complexes MCl4L2: X-ray crystal structure analyses and DFT calculations", M. Niehues, G. Kehr, G. Erker, B. Wibbeling, R. Fröhlich, O. Blacque, H. Berke, J. Organomet. Chem. 2002, 663, 192-203.
"The Reaction of (Butadiene)zirconocene with Imines", C. Höltke, G. Erker, G. Kehr, R. Fröhlich, O. Kataeva, Eur. J. Inorg. Chem. 2002, 2789-2799.
"Reaction of [(Cp2TiCH3)(THF)+][BPh4-] with Tripeptide Derivatives: Formation of Cationic (Peptide)titanocene Complexes", D. Harmsen, G. Erker, R. Fröhlich, G. Kehr, Eur. J. Inorg. Chem. 2002, 3156-3171.
"Bildung eines zwitterionischen Einkomponentenkatalysators für die Ethenpolymerisation auf Basis von Butadiennickelkomplexen: ein alternativer Aktivierungsweg bei homogenen Ziegler Natta-Katalysatoren später Übergangsmetalle", J. Strauch, G. Erker, G. Kehr, R. Fröhlich, Angew. Chem. 2002, 114, 2662-2664; "Formation of a Butadienenickel-Based Zwitterionic Single-Component Catalyst for Ethylene Polymerization: An Alternative Activation Pathway for Homogeneous Ziegler Natta Catalysts of Late Transition Metals", J. Strauch, G. Erker, G. Kehr, R. Fröhlich, Angew. Chem. Int. Ed. Engl. 2002, 41, 2543-2546.
"Synthesis, Structural and Chemical Characterization of Unsaturated C4- and C10-Bridged Group-4 ansa-Metallocenes Obtained Through a Ring-Closing Olefin Metathesis Reaction", D. Hüerländer, N. Kleigrewe, G. Kehr, G. Erker, R. Fröhlich, Eur. J. Inorg. Chem. 2002, 2633-2642.
"Structural Features of Me2Si-Bridged Cp/Phosphido Group 4 Metal Complexes, "CpSiP" Constrained-Geometry Ziegler Natta Catalyst Precursors", G. Altenhoff, S. Bredeau, G. Erker, G. Kehr, O. Kataeva, R. Fröhlich, Organometallics 2002, 21, 4084-4089.
"Synthesis and Structural Features of Arduengo Carbene Complexes of Group 4 Metallocene Cations", M. Niehues, G. Erker, G. Kehr, P. Schwab, R. Fröhlich, O. Blacque, H. Berke, Organometallics 2002, 21, 2905-2911.
"Formation of Isomeric BAr3 Adducts of 2-Lithio-N-methylimidazole", D. Vagedes, G. Kehr, D. König, K. Wedeking, R. Fröhlich, G. Erker, C. Mück-Lichtenfeld, S. Grimme, Eur. J. Inorg. Chem. 2002, 2015-2021.
"Conformational features of a furyl-substituted bis(tetrahydroindenyl)zirconium dichloride system", T. Dreier, F. Hannig, G. Erker, K. Bergander, R. Fröhlich, J. Phys. Org. Chem. 2002, 15, 582-589.
"Synthesis and structural characterization of [H(OEt2)2]+[(C3H3N2){B(C6F5)3}2]- – a Brønsted acid with an imidazole-derived "non-coordinating" anion", D. Vagedes, G. Erker, R. Fröhlich, J. Organomet. Chem. 2002, 641, 148-155, 2002, 651, 157.
"Synthesis and structural characterization of Group 4 metallocene complexes that contain remote carboxamide functionalities at their Cp-side chains", D. Hüerländer, R. Fröhlich, G. Erker, J. Chem. Soc., Dalton Trans. 2002, 1513-1520.
"Formation of sp3-C1-Bridged Cp/Amido Titanium and Zirconium "CpCN" Constrained-Geometry Ziegler Natta Catalyst Systems", K. Kunz, G. Erker, S. Döring, S. Bredeau, G. Kehr, R. Fröhlich, Organometallics 2002, 21, 1031-1041.
"Synthesis of dimetallic m-alkylideneamido zirconocene dications by a thermodynamically favorable lithium chloride elimination pathway", S. Döring, G. Erker, R. Fröhlich, J. Organomet. Chem. 2002, 643/644, 61-67.
"Formation of Cyclodimeric (sp2-C1)-Bridged Cp/-Oxido ("CpC1O"MIVX2) Group 4 Metal Ziegler-Natta Catalyst Systems – How Important is the "Constrained Geometry" Effect?", K. Kunz, G. Erker, G. Kehr, R. Fröhlich, H. Jacobsen, H. Berke, O. Blacque, J. Am. Chem. Soc. 2002, 124, 3316-3326.
"Thermochemical Heat Treatment of Steel Substrates using Borane-Amine Adducts as Precursors", A. Küper, G. Kehr, J. Pflug, H.-R. Stock, C. Sarter, P. Mayr, G. Erker, Surface Engineering, 2001, 17, 55-60.
"The Development of Single Component Metallocene Betaine Ziegler-Natta Catalysts and Related Systems", B. Temme, J. Karl, M. Dahlmann, K. Bergander, G. Kehr, H. Luftmann, R. Fröhlich, T. Jödicke, G. Erker, in Advances on Organometallic Catalysts and Olefin Polymerization in China and Germany, Ed. J. Sun, C. Janiak, Chemical Industry Press, Beijing, China, 2001, S. 82-93.
"Structural and Dynamic Features of Bis[2-(2-furyl)indenyl]zirconium Derivatives", T. Dreier, K. Bergander, E. Wegelius, R. Fröhlich, G. Erker, Organometallics 2001, 20, 5067-5075.
"Formation and structural characterization of amino-substituted [3]ferrocenophanes derived from intramolecular Mannich-type coupling reactions at the metallocene framework", P. Liptau, S. Knüppel, G. Kehr, O. Kataeva, R. Fröhlich, G. Erker, J. Organomet. Chem. 2001, 637-639, 621-630.
"Conformational Features of Group-4 ansa-Metallocenes with Long -(CH2)n- Chains Connecting their Cyclopentadienyl Ligands", T. Jödicke, F. Menges, G. Kehr, G. Erker, U. Höweler, R. Fröhlich, Eur. J. Inorg. Chem. 2001, 2097-2106.
"Molecular arrangement of lipid modified aminoacids at the solid-liquid interface of highly oriented pyrolytic graphite", S. Hoeppener, L. F. Chi, J. Wonnemann, G. Erker, H. Fuchs, Surface Science 2001, 487, 9-14.
"Structural Features of Primary 6-Aminopentafulvenes and Some of Their Derivatives", D. Kunz, R. Fröhlich, G. Erker, Eur. J. Org. Chem. 2001, 3531-3536.
"Synthesis and Structural Behavior of the Tris(h-cyclopentadienyl)zirconium-Betaine Complex Cp2[h5-C5H4B(C6F5)3]Zr", N. Kleigrewe, T. Brackemeyer, G. Kehr, R. Fröhlich, G. Erker, Organometallics 2001, 20, 1952-1955.
"Preparation and Structural Features of Lithium Cyclopentadienides that Contain Amino Acid-Derived Cp-Substituents", D. Kunz, R. Fröhlich, G. Erker, Organometallics 2001, 20, 572-574.
"Group 4 metallocenes containing hetaryl substituents at their p-ligands: synthesis and characterization of the parent bis[2-(2-furyl)indenyl]zirconocene system", T. Dreier, G. Unger, G. Erker, B. Wibbeling, R. Fröhlich, J. Organomet. Chem. 2001, 622, 143-148.
"Synthesis and Structural and Chemical Features of Formimidoyl-Functionalized Lithium Cyclopentadienides", K. Kunz, G. Erker, G. Kehr, R. Fröhlich, Organometallics 2001, 20, 392-400.
"Preparation of 1,2,3,4-Tetramethylpentafulvene by Hydride Anion Abstraction from Lithium Pentamethylcyclopentadienide Employing Tritylchloride", S. Döring, G. Erker, Synthesis 2001, 43-45.
"Generation of Homogeneous (sp3-C1)-Bridged Cp/Amido and Cp/Phosphido Group 4 Metal Ziegler-Natta Catalyst Systems", K. Kunz, G. Erker, S. Döring, R. Fröhlich, G. Kehr, J. Am. Chem. Soc. 2001, 123, 6181-6182.
"Preparation and structural features of 1-(2-pyridyl)- and 1-(2-furyl)indenyl-zirconium complexes", T. Dreier, R. Fröhlich, G. Erker, J. Organomet. Chem. 2001, 621, 197-206.
"Homogeneous Single-Component Betaine Ziegler-Natta-Catalysts Derived from (Butadiene)zirconocene Precursors", G. Erker; Acc. Chem. Res. 2001, 34, 309-317.
"Protonation of the Heterocyclic Cp-Anion Equivalent [Pyrrolyl-B(C6F5)3]Li - Formation of a Useful Neutral Brønsted Acid for the Generation of Homogeneous Metallocene Ziegler Catalysts", G. Kehr, R. Roesmann, R. Fröhlich, C. Holst, G. Erker, Eur. J. Inorg. Chem. 2001, 535-538.
"Oligomeric Chain Structures of Substituted (Dialkylaminomethyl)cyclopentadienyllithium Compounds: Structural Variations Characterized by Different Involvement of the Internal Amino Donor Ligands in the Solid State", K. Kunz, J. Pflug, A. Bertuleit, R. Fröhlich, E. Wegelius, G. Erker, E.-U. Würthwein, Organometallics 2000, 19, 4208-4216.
"2-[Ethyl-(2-methallyl)amino]indenyllithium: Structural Characterization of a Base-Free Oligomeric Supersandwich Indenyllithium Compound", J.-L. Fauré, G. Erker, R. Fröhlich, K. Bergander, Eur. J. Inorg. Chem. 2000, 2603-2606.
"Experimental Characterization of the Alkene-Addition/-Insertion Energy Profile at Homogeneous Group 4 Metal Ziegler-Type Catalysts", M. Dahlmann, G. Erker, K. Bergander, J. Am. Chem. Soc. 2000, 122, 7986-7998.
"Structural Dichotomy in Single-Component Ziegler Catalyst Systems: Characterization of Zr···F and Zr···C-Bonded Structural Types of Group 4 Metallocene [C4H6–B(C6F5)3] Betaines", M. Dahlmann, G. Erker, R. Fröhlich, O. Meyer, Organometallics 2000, 19, 2956-2967.
"Reaction of a Zirconocene(butadiene)borate-Betaine Single-Component Ziegler Catalyst with Trimethylphosphane", M. Dahlmann, R. Fröhlich, G. Erker, Eur. J. Inorg. Chem. 2000, 1789-1793.
"2-Hetaryl-Substituted Bis(indenyl)zirconium Complexes as Catalyst Precursors for Elastomeric Polypropylene Formation", T. Dreier, G. Erker, R. Fröhlich, B. Wibbeling, Organometallics 2000, 19, 4095-4103.
"Structural characterization of M(s-cis-4-C4H6)(Me4C5SiMe2NR) (M = Ti or Zr, R = CMe3 or CHCMe(1-C10H7))", M. Dahlmann, J. Schottek, R. Fröhlich, D. Kunz, M. Nissinen, G. Erker, G. Fink, R. Kleinschmidt, J. Chem. Soc., Dalton Trans. 2000, 1881-1886.
"Preparation of the Metallocene Oxide Cluster Compound [(Cp2Zr)3(m2-OH)3(m3-O)+]BPh4– by Hydrolysis of Jordan's Cation [Cp2ZrCH3(THF)+]BPh4–", M. Niehues, G. Erker, O. Meyer, R. Fröhlich, Organometallics 2000, 19, 2813-2815.
"Coordination Chemistry of {[Zr]-Cl-[Zr]}+ Complexes", H. Jacobsen, T. Brackemeyer, H. Berke, G. Erker, R. Fröhlich, Eur. J. Inorg. Chem. 2000, 1423-1428.
"Addition and Coupling Reactions of Zirconocene Cation Complexes that Contain a Pendant h2-Formaldiminium Side Chain", J. Pflug, G. Erker, G. Kehr, R. Fröhlich, Eur. J. Inorg. Chem. 2000, 1795-1801.
"Cyclopropenylium-Borate Betaines: Opening an Organometallic Route to Neutral Carbocation-Like Compounds", S. Venne-Dunker, W. Ahlers, G. Erker, R. Fröhlich, Eur. J. Inorg. Chem. 2000, 1671-1678.
"Formation and structural properties of salicylaldiminato complexes of zirconium and titanium", J. Strauch, T. H. Warren, G. Erker, R. Fröhlich, P. Saarenketo, Inorg. Chim. Acta 2000, 300-302, 810-821.
"Probing The Dynamic Features of Bis(aminocyclopentadienyl) and Bis(aminoindenyl) Zirconium Complexes" S. Knüppel, J.-L. Fauré, G. Erker, G. Kehr, M. Nissinen, R. Fröhlich, Organometallics 2000, 19, 1262-1268.
"Structural Characterization of Heterodimetallic Zr/Pd and Zr/Rh Catalyst Precursors Containing the C5H4PPh2 Ligand", B. E. Bosch, I. Brümmer, K. Kunz, G. Erker, R. Fröhlich, S. Kotila, Organometallics 2000, 19, 1255-1261.
"Reactions of Functional Groups at the Periphery of Group 4 Metallocene Frameworks: Selective Formation of a Cp-Bonded Azaboretidine Derivative by a Hydroboration Route", D. Kunz, G. Erker, R. Fröhlich, G. Kehr, Eur. J. Inorg. Chem. 2000, 409-416.
"1,3-Doubly Bridged Group 4 Metallocenes by Intramolecular Reductive Coupling of Pendant Olefins", T. H. Warren, G. Erker, R. Fröhlich, B. Wibbeling, Organometallics 2000, 19, 127-134.
"Reaction of phenylacetylene with (butadiene)tantalocene cation" H. C. Strauch, G. Erker, R. Fröhlich, J. Organomet. Chem. 2000, 593-594, 388-391.
"Substituent Dependent Formation of Supramolecular Aggregates of 6-Hydroxy-trans-3-hexenoic Acids in the Solid State", H. C. Strauch, T. Rinderknecht, G. Erker, R. Fröhlich, E. Wegelius, F. Zippel, S. Höppener, H. Fuchs, L. Chi, Eur. J. Org. Chem. 2000, 187-192.
"(N-Pyrrolyl)B(C6F5)2 – A New Organometallic Lewis Acid for the Generation of Group 4 Metallocene Cation Complexes", G. Kehr, R. Fröhlich, B. Wibbeling, G. Erker, Chem. Eur. J. 2000, 6, 258-266.
"Structural Characterization of an (s-trans-h4-Butadiene) Group 4 ansa-Metallocene Complex", M. Dahlmann, G. Erker, R. Fröhlich, O. Meyer, Organometallics 1999, 18, 4459-4461.
"Reaktion von Naphtholen mit B(C6F5)3: Bildung und Charakterisierung der Lewis-Säure-Addukte ihrer Keto-Isomere", D. Vagedes, R. Fröhlich, G. Erker, Angew. Chem. 1999, 111, 3561-3565. "Treatment of Naphthols with B(C6F5)3: Formation and Characterization of the Lewis Acid Adducts of Their Keto-Isomers", D. Vagedes, R. Fröhlich, G. Erker, Angew. Chem. Int. Ed. Engl. 1999, 38, 3362-3365.
"Unexpected alkyl-substituent exchange during the formation of a cationic bis(zirconocene) complex that contains a planar four-co-ordinate carbon atom", J. Pflug, R. Fröhlich, G. Erker, J. Chem. Soc., Dalton Trans. 1999, 2551-2555.
"Formation and structural properties of 1,1',2,2'-tetra(tert-butylcarbamoyl)-ferrocene and -ruthenocene Derivatives", K. Klaß, R. Fröhlich, G. Erker, J. Chem. Soc., Dalton Trans. 1999, 4457-4461.
"Group 5 Metal Complexes with Cyclooctatetraene: Formation and Characterization of (Butadiene)(cyclooctatetraene)(cyclopentadienyl)tantalum Systems", H. C. Strauch, K. Bergander, G. Kehr, R. Fröhlich, G. Erker, Eur. J. Inorg. Chem. 1999, 1461-1466.
"Borane Insertion into Group-4 Metal-to-Carbon Bonds: The Reaction of HB(C6F5)2 with (h2-Formaldehyde)zirconocene Dimer and with (Butadiene)zirconocene", U. Blaschke, G. Erker, R. Fröhlich, O. Meyer, Eur. J. Inorg. Chem. 1999, 2243-2247.
"Formation of functionalized [3]ferrocenophane-derivatives by an enamine condensation reaction", S. Knüppel, R. Fröhlich, G. Erker, J. Organomet. Chem. 1999, 586, 218-222, 2000, 595, 307-312.
"Reactions of (Butadiene)tantalocene Cation with Alkyl Isocyanides", H. C. Strauch, B. Wibbeling, R. Fröhlich, G. Erker, H. Jacobsen, H. Berke, Organometallics 1999, 18, 3802-3812.
"Evidence for a-Nitrogen Participation in the Internal C-H Activation Reaction at ((Dimethylamino)methyl)cyclopentadienyl-Derived Methylzirconocene Cations", J. Pflug, A. Bertuleit, G. Kehr, R. Fröhlich, G. Erker, Organometallics 1999, 18, 3818-3826.
"Formation of the [(s-trans-h4-Butadiene)TaCp*Cp]+ Cation and Its Reaction with Organic Carbonyl Derivatives", H. C. Strauch, G. Erker, R. Fröhlich, M. Nissinen, Eur. J. Inorg. Chem. 1999, 1453-1459.
"The reaction of (butadiene)tantalocene cation with bulky carbonyl derivatives" H. C. Strauch, R. Roesmann, S. Pacheiner, G. Erker, R. Fröhlich, B. Wibbeling, J. Organomet. Chem. 1999, 584, 318-322.
"Group-4 Metallocene Cation Complexes of Oligopeptides: Reaction of [Cp2ZrCH3(THF)+BPh4-] with Boc-Protected Di- and Tripeptide Esters", J. Wonnemann, M. Oberhoff, G. Erker, R. Fröhlich, K. Bergander, Eur. J. Inorg. Chem. 1999, 1111-1120.
"Using bent metallocenes for stabilizing unusual coordination geometries at carbon", G. Erker, Chem. Soc. Rev. 1999, 28, 307-314.
"Organische Chemie funktioneller Gruppen an Gruppe-4-Metallocengerüsten: Bildung eines starren Ansa-Metallocens durch C-C-Verknüpfung vom Typ der Mannich-Reaktion", S. Knüppel, G. Erker, R. Fröhlich, Angew. Chem. 1999, 111, 2048-2051; "Organic Transformations at a Group 4 Metallocene Framework: Formation of a Rigid ansa-Metallocene by Mannich-type Carbon-Carbon Coupling", S. Knüppel, G. Erker, R. Fröhlich, Angew. Chem. Int. Ed. Engl. 1999, 38, 1923-1926.
"Structural and Spectroscopic Evidence for the Occurrence of gauche-Betaine Intermediates in the Thio-Wittig Reaction", C. Puke, G. Erker, B. Wibbeling, R. Fröhlich, Eur. J. Org. Chem. 1999, 1831-1841.
"Syntheses and Insertion Reactions of (2-Aldehyde)zirconocene-Supported (Hydrido)zirconocene Cation Systems", U. Blaschke, F. Menges, G. Erker, R. Fröhlich, Eur. J. Inorg. Chem. 1999, 621-632.
"Lewis Acid Properties of Tris(pentafluorophenyl)borane. Structure and Bonding in L-B(C6F5)3 Complexes", H. Jacobsen, H. Berke, S. Döring, G. Kehr, G. Erker, R. Fröhlich, O. Meyer, Organometallics 1999, 18, 1724-1735.
"Metallaoxirane-Supported Hydrido Group 4 Metallocene Cations", U. Blaschke, G. Erker, M. Nissinen, E. Wegelius, R. Fröhlich, Organometallics 1999, 18, 1224-1234.
"Direct Experimental Observation of the Stereochemistry of the First Propene Insertion Step at an Active Homogeneous Single Component Metallocene Ziegler Catalyst", M. Dahlmann, G. Erker, M. Nissinen, R. Fröhlich, J. Am. Chem. Soc. 1999, 121, 2820-2828.
"Zirconium-Borat-Betaine: Synthese ungewöhnlicher Aromaten und die Entwicklung neuer Katalysatorsysteme", G. Erker, Siegener Universitäts-Reden 1999, 21, 27-45.
"Formation and Structures of [1,2-Bis(N-tert-butylcarbamoyl)cyclopentadienyl]zirconium Complexes - Coordination Chemistry of a "Fulvenologous" Malonic Amide Anion Ligand System", K. Klaß, L. Duda, N. Kleigrewe, G. Erker, R. Fröhlich, E. Wegelius, Eur. J. Inorg. Chem. 1999, 11-19.
"New Aspects of the Thio-Wittig-Reaction", G. Erker, R. Hock, S. Wilker, C. Laurent, C. Puke, E.-U. Würthwein, N. C. Aust, R. Fröhlich, Phosphorus, Sulfur, and Silicon 1999, 153-154, 79-97.
"Coupling of s-acetylide ligands at Group 4 metallocene complexes to yield methylenecyclopropene-type frameworks", W. Ahlers, G. Erker, R. Fröhlich, U. Peuchert, J. Organomet. Chem. 1999, 578, 115-124.
"Developing a fulvene route to C1-bridged "constrained geometry" Ziegler catalyst systems", A. Bertuleit, M. Könemann, L. Duda, G. Erker, R. Fröhlich, Topics in Catalysis 1999, 7, 37-44.
"Synthesis of (s-trans-4-Butadiene)tantalocene Cation and Its CC-Coupling Reactions with Ketones, Nitriles and Alkynes", H. C. Strauch, G. Erker, R. Fröhlich, Organometallics 1998, 17, 5746-5757.
"Some New exo,exo-Bis(isodicyclopentadienyl)titanium and –zirconium Dichloride Derivatives: Synthesis, Characterization, and Evaluation as Propene Polymerization Catalysts", O. Gobley, P. Meunier, B. Gautheron, J. C. Gallucci, G. Erker, M. Dahlmann, J. D. Schloss, L. A. Paquette, Organometallics 1998, 17, 4897-4903.
"Addition of Group 4 bent metallocene cation complexes to (butadiene)zirconocene: the formation of dinuclear (m-butadiene)bis(metallocene) cations", J. Schottek, G. Erker, J. Organomet. Chem. 1998, 569, 217-223.
"Comparison of Characteristic Structural Features among the Triade of Tris(cyclopentadienyl)(Group-4 Metal) Complex Cations: a Combined Theoretical and Experimental Study", H. Jacobsen, H. Berke, T. Brackemeyer, T. Eisenblätter, G. Erker, R. Fröhlich, O. Meyer, K. Bergander, Helv. Chim. Acta 1998, 81, 1692-1709.
"Reaction of (s-alkynyl) Group 4 metallocene cation complexes with alkyl- and arylisocyanides", W. Ahlers, G. Erker, R. Fröhlich, J. Organomet. Chem. 1998, 571, 83-89.
"Formation of Hypercoordinated Carbon inside a (m-Hydrocarbyl)bis(group 4 metallocene) Framework by a Simple Protonation Route", J. Schottek, D. Röttger, G. Erker, R. Fröhlich, J. Am. Chem. Soc. 1998, 120, 5264-5273.
"Zirconocene-(m-Organyl)borate Betaines Derived by Treatment of a (s-Alkenyl)(s-alkynyl)zirconocene Complex with Tris(pentafluorophenyl)borane", W. Ahlers, G. Erker, R. Fröhlich, Eur. J. Inorg. Chem. 1998, 889-895.
"Arriving at an Experimental Estimate of the Intrinsic Activation Barrier of Olefin Insertion into the Zr–C Bond of an Active Metallocene Ziegler Catalyst", J. Karl, M. Dahlmann, G. Erker, K. Bergander, J. Am. Chem. Soc. 1998, 120, 5643-5652.
"Formation of Metallocene-Stabilized Planar-Tetracoordinate Carbon Compounds by a Protonation Route", J. Schottek, G. Erker, R. Fröhlich, Eur. J. Inorg. Chem. 1998, 551-558.
"Reaction of the Lewis Acid Tris(pentafluorophenyl)borane with a Phosphorus Ylide: Competition between Adduct Formation and Electrophilic and Nucleophilic Aromatic Substitution Pathways", S. Döring, G. Erker, R. Fröhlich, O. Meyer, K. Bergander, Organometallics 1998, 17, 2183-2187.
"Formation of a Constrained-Geometry Ziegler Catalyst System Containing a C1 Instead of a Usual Si1 Connection Between the Cyclopentadienyl and Amido Ligand Components", L. Duda, G. Erker, R. Fröhlich, F. Zippel, Eur. J. Inorg. Chem. 1998, 1153-1162.
"Formation of Group 4 Metallocene-Enolate · B(C6F5)3 Adducts and Their Role as Initiators in the Rapid Polymerization of the Functionalized Olefin Methyl vinyl ketone", W. Spaether, K. Klaß, G. Erker, F. Zippel, R. Fröhlich, Chem. Eur. J. 1998, 4, 1411-1417.
"Evidence for a Continuous Transition between Thiaphosphetane and Betaine-Type Structures in the Thio-Wittig Reaction", C. Puke, G. Erker, N. C. Aust, E.-U. Würthwein, R. Fröhlich, J. Am. Chem. Soc. 1998, 120, 4863-4864.
"Observation of the primary Zr–C insertion products in the reaction of the (butadiene)zirconocene/B(C6F5)3 betaine Ziegler catalyst system with reactive alkynes", J. Karl, G. Erker, J. Mol. Catal. A 1998, 128, 85-102.
"The synthesis of substituted bis[(diarylphosphinomethyl)cyclopentadienyl]zirconocene dichloride complexes for the preparation of heterodimetallic complexes containing early/late transition metal combinations", B. Bosch, G. Erker, R. Fröhlich, Inorg. Chim. Acta 1998, 270, 446-458.
"Stabilisierung eines C2v-verzerrten Methan-derivats in einem Organometallgerüst", J. Schottek, G. Erker, R. Fröhlich, Angew. Chem. 1997, 109, 2585-2587, "Stabilization of a C2v-Distorted Methane Derivative in an Organometallic Framework", Angew. Chem. Int. Ed. Engl. 1997, 36, 2475-2477.
"Nichtkovalente Wechselwirkungen bei Organometallverbindungen: intramolekulare Metall-Kohlenstoff-Ionenpaarbildung bei Zirconium-Borat-Betainen", J. Karl, G. Erker, R. Fröhlich, F. Zippel, F. Bickelhaupt, M. Schreuder Goedheijt, O. S. Akkerman, P. Binger, J. Stannek, Angew. Chem. 1997, 109, 2914-2917, "Noncovalent Interactions in Organometallic Compounds: Formation of an Intramolecular Metal-Carbon Ion Pair in Zirconium Borate Betaines", Angew. Chem. Int. Ed. Engl. 1997, 36, 2771-2774.
"Internal Fluorocarbon Coordination as a Tool for the Protection of Active Catalytic Sites: Experimental Characterization of the Zr···F–C Interaction in the Group 4 Metallocene(butadiene)/ B(C6F5)3 Betaine Ziegler Catalyst Systems", J. Karl, G. Erker, R. Fröhlich, J. Am. Chem. Soc. 1997, 119, 11165-11173.
"Evidence for Internal Ion Pair Formation upon Insertion of Reactive Alkenes in the Zirconium–Carbon Bond of the Cp2Zr(m-C4H6)B(C6F5)3 Metallocene-Boron-Betaine Ziegler Catalyst System", J. Karl, G. Erker, Chem. Ber./Recueil 1997, 130, 1261-1267.
"Synthesis, Structure, and Dynamic Behavior of (m-Aldimido)(m-1:2-alkyne)biszirconocene Cation Complexes That Contain Planar-Tetracoordinate Carbon", W. Ahlers, G. Erker, R. Fröhlich, U. Peuchert, Chem. Ber./Recueil 1997, 130, 1069-1077.
"Characteristic Features of Neutral Cyclopropenylium-Like Compounds: Synthesis, Structure, and Chemical Behavior of a Cyclopropenylioborate Betaine", W. Ahlers, G. Erker, R. Fröhlich, F. Zippel, Chem. Ber./Recueil 1997, 130, 1079-1084.
"Internally Phosphine-Stabilized Zirconocene Cations Employing Substituted ((Diarylphosphino)methyl)cyclopentadienyl Ligand Systems", B. E. Bosch, G. Erker, R. Fröhlich, O. Meyer, Organometallics 1997, 16, 5449-5456.
"Reaction of "Jordan's Cation" [Cp2ZrCH3(thf)]+ with Amino Acid-Derived Isocyanates – A First Synthetic Route to Oligopeptide-Modified Group 4 Bent Metallocene Cation Systems", M. Oberhoff, G. Erker, R. Fröhlich, Chem. Eur. J. 1997, 3, 1521-1525.
"Formation and structures of dialkyltartrate-bridged dinuclear group 4 metallocene complexes", W. Spaether, M. Rump, G. Erker, R. Fröhlich, J. Hecht, C. Krüger, J. Kuhnigk, Anales de Quimica Int. Ed. 1997, 93, 394-403.
"Diastereoselective Synthesis of a Bis(tetrahydroindenyl)zirconocene Dichloride with "Ansa-Fused" Annulated Six-membered Ring Systems: A Specific Solution of the Synthetic rac-/meso-Group 4 Bent Metallocene Problem", M. Könemann, G. Erker, R. Fröhlich, S. Kotila, Organometallics 1997, 16, 2900-2908.
"Cp3Zr(acetonitrile)+: Structure of an Electron-Rich Organometallic do-Cation", T. Brackemeyer, G. Erker, R. Fröhlich, J. Prigge, U. Peuchert, Chem. Ber./Recueil 1997, 130, 899-902.
"Structure and Chemical Behavior of an h5-(1-Azapentadienyl)lithium Derivative Generated by Deprotonation Reactions Starting from 9-(N-tert-Butylaminomethyl)fluorene or 6-(tert-Butylamino)dibenzofulvene", M. Könemann, G. Erker, R. Fröhlich, E.-U. Würthwein, J. Am. Chem. Soc. 1997, 119, 11155-11164.
"Adjusting the Features of Active Metallocene Ziegler Systems for Their Potential Use as Carbon–Carbon Coupling Catalysts in Organic Synthesis", S. Thiele, G. Erker, Chem. Ber./Recueil 1997, 130, 201-207.
"Formation, Structure, and Dynamic Behavior of a Novel Dinuclear Cationic m-2,4-Hexadiyne Bis(zirconocene) Complex", W. Ahlers, B. Temme, G. Erker, R. Fröhlich, F. Zippel, Organometallics 1997, 16, 1440-1444.
"Synthesis and Structure of Donor-Ligand-Stabilized Tris(cyclopentadienyl)zirconium Cations", T. Brackemeyer, G. Erker, R. Fröhlich, Organometallics 1997, 16, 531-536.
"Uncovering Alternative Reaction Pathways Taken by Group 4 Metallocene Cations: Facile Intramolecular CH Activation of Cp–(Dimethylamino)alkyl Substituents by a Methylzirconocene Cation", A. Bertuleit, C. Fritze, G. Erker, R. Fröhlich, Organometallics 1997, 16, 2891-2899.
"Group 4 ansa-metallocene Ziegler catalysts derived from trans-1,2-cycloalkylene-bis(indenyl)- and bis(tetrahydroindenyl)MCl2 systems: structural and reactivity studies", A. Steinhorst, G. Erker, M. Grehl, R. Fröhlich, J. Organomet. Chem. 1997, 542, 191-204.
"Cp2*Zr(m-C4H6)B(C6F5)3, a first example of a stable unbridged homogeneous metallocene–betaine Ziegler catalyst system", J. Karl, G. Erker, R. Fröhlich, J. Organomet. Chem. 1997, 535, 59-62.
"Verbindungen mit planar tetrakoordiniertem Kohlenstoff", D. Röttger, G. Erker, Angew. Chem. 1997, 109, 840-856; "Compounds Containing Planar-Tetracoordinate Carbon", Angew. Chem. Int. Ed. Engl. 1997, 36, 812-827.
"Dynamic features of the zirconocene–boron–betaine complexes obtained by treatment of bis(alkynyl)zirconocenes with the tris(pentafluorophenyl)borane Lewis-acid", W. Ahlers, B. Temme, G. Erker, R. Fröhlich, T. Fox, J. Organomet. Chem. 1997, 527, 191-201.
1996
"Structural Assembly of Rigid Hydroxycarboxylic Acid Frameworks – Solid State Structures of Two Substituted 6-Hydroxy-trans-3-hexenoic Acids", M. Berlekamp, G. Erker, R. Fröhlich, Z. Naturforsch. 1996, 51b, 1649-1654.
"Self-Assembly of Substituted 6-Hydroxy-trans-3-hexenoic Acids – Formation of Extended Ribbon-Like Structures by Hydrogen Bonds", H. C. Strauch, G. Erker, R. Fröhlich, Chem. Ber. 1996, 129, 1029-1034.
"Conformational Analysis of Nonbridged Bent Metallocene Ziegler-Catalyst Precursors – Detection of the Third Torsional Isomer", M. Knickmeier, G. Erker, T. Fox, J. Am. Chem. Soc. 1996, 118, 9623-9630.
"The Isocyanate Route to Cyclopentadienyl-Carboxamide- and Cyclopentadienyl-Amino Ester-Substituted Metallocene Complexes", M. Oberhoff, L. Duda, J. Karl, R. Mohr, G. Erker, R. Fröhlich, M. Grehl, Organometallics 1996, 15, 4005-4011.
"The Structural Side of Conjugation in Some Stable Primary Enamines and Related Systems", D. Kowalski, R. Fröhlich, G. Erker, Z. Naturforsch. 1996, 51b, 1053-1059.
"Novel vanadium and titanium phosphorus ylide complexes", P. Berno, S. Gambarotta, S. Kotila, G. Erker, J. Chem. Soc., Chem. Commun. 1996, 779-780.
"3H-Azepines by Intramolecular Condensation Reaction of 1,6-Diamino-1,3,5-hexatrienes", D. Kowalski, G. Erker, S. Kotila, Liebigs Annalen 1996, 887-890.
"Observing a Homogeneous Ziegler Catalyst Precursor at Work: Insertion Reactions into the Zirconium-Carbon Bond of the (Butadiene)ZrCp2 / B(C6F5)3 Addition Product", B. Temme, J. Karl, G. Erker, Chem. Eur. J. 1996, 2, 919-924.
"Formation of stable organometallic planar-tetracoordinate carbon compounds containing a cationic (m-R1CCR2)[m-chloro(ZrCp2)2] framework", D. Röttger, G. Erker, R. Fröhlich, J. Organomet. Chem. 1996, 518, 221-225.
"Reaction of Alkylzirconocene Cation Complexes with (R-CºC-)2SiR2 Reagents: Preparation of Heterodimetallic Compounds Containing A m-Alkynyl Ligand Bridge between Zirconium and Silicon", D. Röttger, G. Erker, R. Fröhlich, S. Kotila, Chem. Ber. 1996, 129, 5-9.
"Stabilization of a Planar-Tetracoordinate Carbon Center in an Organometallic Complex Containing both a Zirconocene and a Hafnocene Moiety", D. Röttger, G. Erker, R. Fröhlich, S. Kotila, Chem. Ber. 1996, 129, 1-3.
"Reaction of dimethylzirconocene with imidazole in the presence of tris(pentafluorophenyl)borane", D. Röttger, G. Erker, R. Fröhlich, S. Kotila, J. Organomet. Chem. 1996, 518, 17-19.
"Reaction of the Organometallic Planar Tetracoordinate Carbon Compound [(Cp2Zr)2(m-CºCCH3)(m-(h1-C:h2-C,C)-CH3CCCH3)]+[BPh4]- with Alkyl Isocyanides", D. Röttger, J. Pflug, G. Erker, S. Kotila, R. Fröhlich, Organometallics 1996, 15, 1265-1267.
"Bildung eines Zirconocen-Betain-Systems durch elektrophile Substitutionsreaktion mit B(C6F5)3 am Cyclopentadienylliganden", J. Ruwwe, G. Erker, R. Fröhlich, Angew. Chem. 1996, 108, 108-110, "Formation of a Zirconocene-Betaine System by Electrophilic Substitution with B(C6F5)3 at a Cyclopentadienyl Ligand", Angew. Chem. Int. Ed. Engl. 1996, 35, 80-82.
"Hydride abstraction from (h2-acetaldehyde)zirconocene dimer using B(C6F5)3", D. Röttger, S. Schmuck, G. Erker, J. Organomet. Chem. 1996, 508, 263-265.
1995
"Stereochemistry of the [4 + 2] Cycloaddition of Diarylselenoketones with Conjugated Dienes", S. Wilker, G. Erker, J. Am. Chem. Soc. 1995, 117, 10922-10930.
"Formation of a [m-(h1-N:h2-C,N)-Aryl cyanide]biszirconocene Cation by Ligand Exchange Reaction", D. Röttger, G. Erker, R, Fröhlich, Chem. Ber. 1995, 128, 1045-1046.
"Cyclotetrameric Supersandwich Structure of a Structurally Confined C1-Bridged Dilithiobis(cyclopentadienide) - A Case of Supramolecular LiCp-Association", M. Könemann, G. Erker, M. Grehl, R. Fröhlich, E.-U. Würthwein, J. Am. Chem. Soc. 1995, 117, 11215-11219.
"Electronic Structure of Planar-Tricoordinated Phosphorus in Titanium-Boron Complexes", R. Gleiter, S. J. Silverio, P. Binger, F. Sandmeyer, G. Erker, Chem. Ber. 1995, 128, 775-778.
"Formation of tetrabenzodispiro[4.0.4.3]tridecatetraene by a titanium mediated fluorenyl coupling reaction", C. Fritze, G. Erker, R. Fröhlich, J. Organomet. Chem. 1995, 501, 41-45.
"Detection of a Thiaphosphetane during the Reaction of the Ylide Ph3P=CH2 with Thiobenzophenone", S. Wilker, C. Laurent, C. Sarter, C. Puke, G. Erker, J. Am. Chem. Soc. 1995, 117, 7293-7294.
"Generation of Dinuclear Tartrate-Bridged Dicationic Titanocene Complexes", W. Spaether, G. Erker, M. Rump, C. Krüger, J. Kuhnigk, Organometallics 1995, 14, 2621-2623.
"exo,exo-Bis(isodicyclopentadienyl)titanium and -zirconium Dichlorides: Conformational Characterization of the Homogeneous Ziegler Catalyst Precursors in Solution", C. Fritze, M. Knickmeier, G. Erker, F. Zaegel, B. Gautheron, P. Meunier, L. A. Paquette, Organometallics 1995, 14, 5446-5449.
"Reaktion von (Butadien)zirconocen mit Tris(pentafluorphenyl)boran - ein neuer Weg zur Herstellung Alumoxan-freier Metallocen-Ziegler-Katalysatoren", B. Temme, G. Erker, J. Karl, H. Luftmann, R. Fröhlich, S. Kotila, Angew. Chem. 1995, 107, 1867-1869; "Reaction of (Butadiene)zirconocene with Tris(pentafluorophenyl)borane – A Novel Way of Generating Methylalumoxane-Free Homogeneous Ziegler-Type Catalysts" Angew. Chem. Int. Ed. Engl. 1995, 34, 1755-1757.
"Monitoring the electronic features of rigid C1-bridged Group 4 ansa-metallocenes by using the dynamic and structural properties of their s-cis-4-butadiene complexes", T. Bürgi, H. Berke, D. Wingbermühle, C. Psiorz, R. Noe, T. Fox, M. Knickmeier, M. Berlekamp, R. Fröhlich, G. Erker, J. Organomet. Chem. 1995, 497, 149-159.
"Syntheses and Crystallographic Characterizations of Trinuclear (m3-O) Zirconium Complexes", F. Boutonnet, M. Zablocka, A. Igau, J. Jaud, J.-P. Majoral, J. Schamberger, G. Erker, S. Werner, C. Krüger, J. Chem. Soc., Chem. Commun. 1995, 823-824.
"Formation of a Stable Cyclopropenylium Betaine", G. Erker, W. Ahlers, R. Fröhlich, J. Am. Chem. Soc. 1995, 117, 5853-5854.
"Determination of the Stabilization Energy of Planar-Tetracoordinate Carbon in Dynamic Dinuclear (m-Hydrocarbyl)bis(zirconocene) Cation Complexes and Detection of an Organometallic Memory Effect in Their Formation", D. Röttger, G. Erker, R. Fröhlich, M. Grehl, S. J. Silverio, I. Hyla-Kryspin, R. Gleiter, J. Am. Chem. Soc. 1995, 117, 10503-10512.
"Synthesis and Application of Ring-Substituted Analogues of the [4-(-Cyclopentadienylidene)-4,7,7-trimethyl-4,5,6,7-tetrahydro-5-indenyl]ZrCl2 Ansa-Metallocene System", C. Psiorz, G. Erker, R. Fröhlich, M. Grehl, Chem. Ber. 1995, 128, 357-364.
"Synthesis of a Chiral Meso-Like Ansa-Zirconocene Complex and its Use for the Catalytic Formation of Low Molecular Weight Polypropylene", S. Thiele, G. Erker, C. Fritze, C. Psiorz, R. Fröhlich, Z. Naturforsch. 1995, 50b, 982-989.
"Preparation of Stable Primary Enamines: 1-Aminobutadienes by Allyl Grignard Addition to Aryl Cyanides Followed by Controlled Hydrolysis", G. Erker, M. Riedel, S. Koch, T. Jödicke, E.-U. Würthwein, J. Org. Chem. 1995, 60, 5284-5290.
"A Rigid C1-Bridged Ansa-Zirconocene-Derived Catalyst System Suited for Stereoselective Low Molecular Weight Polypropylene Formation", G. Erker, C. Psiorz, R. Fröhlich, Z. Naturforsch. 1995, 50b, 469-475.
"New Bimetallic Complexes (M1 = Ti, Zr; M2 = B) Containing Planar Tetracoordinate Carbon", P. Binger, F. Sandmeyer, C. Krüger, G. Erker, Tetrahedron 1995, 51, 4277-4290.
"Preparation and Catalytic Application of a Novel Very Rigid Group 4 Ansa-Metallocene System", G. Erker, C. Psiorz, R. Fröhlich, M. Grehl, C. Krüger, R. Noe, M. Nolte, Tetrahedron 1995, 51, 4347-4358.
"Oxidative 2-iminoacyl formation by reaction of amidozirconocene complexes with tris(pentafluorophenyl)borane", B. Temme, G. Erker, J. Organomet. Chem. 1995, 488, 177-182.
"Formation of hafnium carbide thin films by plasma enhanced chemical vapor deposition from bis(-cyclopentadienyl)dimethylhafnium as precursor", P. Špatenka, H. Suhr, G. Erker, M. Rump, Appl. Phys. A 1995, 60, 285-288.
"A Nine-Membered Metallacyclic Metalloxycarbene Vanadium Complex", M. Grehl, M. Berlekamp, G. Erker, Acta Cryst. 1995, C51, 1772-1774.
1994
"A Simple Synthesis of 1-Aminohexa-1,3,5-trienes - the Formation of Stable Conjugated Primary Enamines Under Thermodynamic Control", M. Riedel, G. Erker, Synthesis 1994, 10, 1039-1042.
"Synthesis of Stable Primary Enamines from (Butadiene)zirconocene and Benzylic Nitriles", G. Erker, D. Kowalski, R. Noe, C. Krüger, M. Nolte, Tetrahedron Lett. 1994, 35, 6665-6668.
"Cyclopropanierung durch Methylenübertragung aus (2-Formaldehyd)zirconocen-Komplexen", G. Erker, S. Schmuck, M. Bendix, Angew. Chem. 1994, 106, 2043-2044; "Cyclopropanation by Methylene Transfer from (2-Formaldehyde)zirconocene Complexes", Angew. Chem. Int. Ed. Engl. 1994, 33, 1955-1957.
"Structural Characterization of Dihydroselenapyrans Prepared by the Reaction of Diarylselenoketones with Conjugated Dienes", R. Fröhlich, M. Grehl, S. Wilker, G. Erker, P. Mazerolles, C. Laurent, Z. Naturforsch. 1994, 49b, 1397-1402.
"Abscheidung von Hartstoffschichten des Typs (B,C,N) bei niedrigen Beschichtungstemperaturen im PACVD-Prozeß", K.-T. Rie, A. Gebauer, J. Wöhle, G. Erker, R. Mohr, C. Sarter, Mat.-wiss. u. Werkstofftech. 1994, 25, 431-434.
"Boron-induced Formation of a Methylenecyclopropene Unit in the Bis(cyclopentadienyl)zirconium Coordination Sphere", B. Temme, G. Erker, R. Fröhlich, M. Grehl, J. Chem. Soc., Chem. Commun. 1994, 1713-1714.
"Heterodimetall-Betain-Chemie: katalytische und stöchiometrische Kupplungen von Alkinyl-Liganden unter dem gemeinsamen Einfluß von Zirconium- und Borzentren", B. Temme, G. Erker, R. Fröhlich, M. Grehl, Angew. Chem. 1994, 106, 1570-1572; "Heterodimetal-Betaine Chemistry: Catalytic and Stoichiometric Coupling of Alkynyl Ligands under the Joint Influence of Zirconium and Boron Centers", Angew. Chem. Int. Ed. Engl. 1994, 33, 1480-1482.
"Formation and Structures of Cationic Pyrazole and Pyrazolyl Zirconocene Complexes", D. Röttger, G. Erker, M. Grehl, R. Fröhlich, Organometallics 1994, 13, 3897-3902.
"Plasma Induced Chemical Vapor Deposition of Zr(C,B) from CpZr(BH4)3 (Cp = C5H5–)", S. Reich, J. Messelhäuser, H. Suhr, G. Erker, C. Fritze, Adv. Mater. 1994, 6, 674-676.
"A Steroid-Substituted Group-4 Bent Metallocene System: Synthesis, Structural Features and Its Use in Catalytic Propene Polymerization", G. Erker, C. Mollenkopf, M. Grehl, B. Schönecker, Chem. Ber. 1994, 127, 2341-2345.
"Group 4 metallocene complexes bearing cholestanol-derived substituents at the Cp-rings — their synthesis and use in propene polymerization catalysis", G. Erker, C. Mollenkopf, J. Organomet. Chem. 1994, 483, 173-181.
"Reaction of "Floriani's Metallaoxirane" [(Cp2ZrCl)2(:1(O),2(C,O)-CH2O)] with Isonitriles", M. Bendix, M. Grehl, R. Fröhlich, G. Erker, Organometallics 1994, 13, 3366-3369.
"Borylation of a Stable Primary Enamine", G. Erker, D. Wingbermühle, M. Grehl, R. Fröhlich, Chem. Ber. 1994, 127, 1331-1332.
"Synthesis of a Novel Annulated C1-Bridged ansa-Metallocene System", G. Erker, C. Psiorz, C. Krüger, M. Nolte, Chem. Ber. 1994, 127, 1551-1553.
"Formation and Structure of a Novel Large-Ring Group 4 ansa-Metallocene Complex", G. Erker, C. Mollenkopf, M. Grehl, R. Fröhlich, C. Krüger, R. Noe, M. Riedel, Organometallics 1994, 13, 1950-1955.
"Eine Templatsynthese stabiler konjugierter primärer Enamine aus Ketonen, Nitrilen und Butadien", L. López, M. Berlekamp, D. Kowalski, G. Erker, Angew. Chem. 1994, 106, 1168-1170; "A Template Synthesis of Stable Conjugated Primary Enamines from Ketones, Nitriles, and Butadiene", Angew. Chem. Int. Ed. Engl. 1994, 33, 1168-1170.
"A Valence Force Field for Zirconocene Dichlorides", U. Höweler, R. Mohr, M. Knickmeier, G. Erker, Organometallics 1994, 13, 2380-2390.
"Synthesis of stable tail-to-tail-conjugated primary enamines containing hetarene substituents", D. Wingbermühle, C. Sarter, G. Erker, Inorg. Chim. Acta 1994, 222, 193-198.
"Syntheses of Substituted 6-Hydroxyhexenoic Acids and Related Tetrahydrofuran Systems by Metallocene-Template Directed 1,4-Selective Coupling of 1,3-Butadiene with Carbonyl Compounds", G. Erker, M. Berlekamp, L. López, M. Grehl, B. Schönecker, R. Krieg, Synthesis 1994, 212-222.
"Formation and Rearrangement of (Siloxymethyl)zirconocene Chloride Complexes", G. Erker, M. Bendix, R. Petrenz, Organometallics 1994, 13, 456-461.
"Neue Titan/Bor-Komplexe mit planar tetrakoordiniertem Kohlenstoff oder planar trikoordiniertem Phosphor", P. Binger, F. Sandmeyer, C. Krüger, J. Kuhnigk, R. Goddard, G. Erker, Angew. Chem. 1994, 106, 213-215; "New Titanium-Boron Complexes with a Planar Tetracoordinate Carbon or a Planar Tricoordinate Phosphorus Center", Angew. Chem. Int. Ed. Engl. 1994, 33, 197-198.
"Evidence of Ketenimine Formation during the Multiple C–C Coupling of Isocyanides by Stabilized Group 4 Metallacyclobutanes", C. Valero, M. Grehl, D. Wingbermühle, L. Kloppenburg, D. Carpenetti, G. Erker, J. L. Petersen, Organometallics 1994, 13, 415-417.
1993
"Herstellung von Zr(B,C,N)-Schichten im DC-Puls-PACVD-Prozeß", K.-T. Rie, A. Gebauer, J. Wöhle, G. Erker, C. Sarter, C. Fritze, Mat.-wiss. u. Werkstofftech. 1993, 24, 353-355.
"Structural Characterization of the Acetylide Bridge in Dinuclear (m-CCSiMe3)-Al/Al and -Al/Zr Complexes", G. Erker, M. Albrecht, C. Krüger, M. Nolte, S. Werner, Organometallics 1993, 12, 4979-4986.
"Coupling Reactions of a [1-(Dialkylboryl)butadiene]hafnocene Complex with Carbonyl Compounds", R. Noe, D. Wingbermühle, G. Erker, C. Krüger, J. Bruckmann, Organometallics 1993, 12, 4993-4999.
"Die energetische Stabilisierung durch ein planar-tetrakoordiniertes Kohlenstoffatom: Untersuchung des Dimetallabicyclus [(Cp2Zr)2(m-CCCH3)(m-H3CCCCH3)]BPh4 durch dynamische NMR-Spektroskopie", G. Erker, D. Röttger, Angew. Chem. 1993, 105, 1691-1693; "The Energetic Stabilization Caused by a Planar-Tetracoordinate Carbon Atom: A Dynamic NMR Spectroscopic Study of the Dimetallabicycle [(Cp2Zr)2(m-CCCH3)(m-H3CCCCH3)]BPh4", Angew. Chem. Int. Ed. Engl. 1993, 32, 1623-1625.
"C–H-Aktivierung bei der Reaktion von (Butadien)zirconocenen und -hafnocenen mit 9-BBN", G. Erker, R. Noe, D. Wingbermühle, J. L. Petersen, Angew. Chem. 1993, 105, 1216-1218; "C-H-Activation by Reaction of (Butadiene)zirconocenes and –hafnocenes with 9-BBN", Angew. Chem. Int. Ed. Engl. 1993, 32, 1213-1215.
"A Group 4 Metallocene Template Synthesis of b,g-Unsaturated e-Hydroxy Carboxylic Acids", M. Berlekamp, G. Erker, B. Schönecker, R. Krieg, A. L. Rheingold, Chem. Ber. 1993, 126, 2119-2126.
"Dihydroselenapyrans by [4 + 2] Cycloaddition of Diaryl Selenoketones", R. Hock, S. Hillenbrand, G. Erker, C. Krüger, S. Werner, Chem. Ber. 1993, 126, 1895-1903.
"Formation and Structure of Stable, Isolable Conjugated Primary Enamines", G. Erker, R. Pfaff, D. Kowalski, E.-U. Würthwein, C. Krüger, R. Goddard, J. Org. Chem. 1993, 58, 6771-6778.
"On the structural features of the chiral organometallic Lewis-acid catalyst "(dibornacyclopentadienyl)zirconiumtrichloride"", G. Erker, J. Schamberger, A. A. H. van der Zeijden, S. Dehnicke, C. Krüger, R. Goddard, M. Nolte, J. Organomet. Chem. 1993, 459, 107-115.
"Eine ab-initio-MO-Untersuchung über stabilisierende Wechselwirkungen in zweikernigen Zr/Al-Komplexen mit planar tetrakoordiniertem Kohlenstoffzentrum", R. Gleiter, I. Hyla-Kryspin, S. Niu, G. Erker, Angew. Chem. 1993, 105, 753-755; "An Ab Initio MO Study on Stabilizing Interactions in Dinuclear Zr/Al Complexes with a Planar Tetracoordinate Carbon Center", Angew. Chem. Int. Ed. Engl. 1993, 32, 754-756.
"Stabilizing Interactions and Coordination in Cationic Zirconocene Complexes: Cp2ZrL+. A MO Theoretical Study", R. Gleiter, I. Hyla-Kryspin, S. Niu, G. Erker, Organometallics 1993, 12, 3828-3836.
"Preparation and structure of bis(h5-methylcyclopentadienyl)titanaindane", G. Erker, U. Korek, A.L. Rheingold, J. Organomet. Chem. 1993, 454, 113-116.
"Structure of a metallacyclic metaloxycarbene vanadium complex prepared from CpV(CO)4", M. Berlekamp, G. Erker, J.L. Petersen, J. Organomet. Chem. 1993, 458, 97-103.
"Synthesis of ansa-Metallocenes by Intramolecular Photochemical [2 + 2] Cycloaddition of Bis(alkenylcyclopentadienyl)zirconium Complexes", G. Erker, S. Wilker, C. Krüger, M. Nolte, Organometallics 1993, 12, 2140-2151.
"Developing an Organometallic (Butadiene)bis(cyclopentadienyl)zirconium-Based Template Synthesis for the Preparation of Stable Conjugated Primary Enamines", G. Erker, R. Pfaff, Organometallics 1993, 12, 1921-1926.
"The Role of Torsional Isomers of Planarly Chiral Nonbridged Bis(indenyl)metal Type Complexes in Stereoselective Propene Polymerisation", G. Erker, M. Aulbach, M. Knickmeier, D. Wingbermühle, C. Krüger, M. Nolte, S. Werner, J. Am. Chem. Soc. 1993, 115, 4590-4601.
"Torsional isomerism of bent metallocene complexes. The structures of meso- and rac-bis(1-cyclohexyltetrahydroindenyl)zirconium dichloride in the solid state", C. Krüger, F. Lutz, M. Nolte, G. Erker, M. Aulbach, J. Organomet. Chem. 1993, 452, 79-86.
"Stereoselective propene polymerization at a metallocene / alumoxane catalyst derived from the chirally-substituted "meso-like" (p-R,p-S)bis[1-(neoisopinocamphyl)-4,5,6,7-tetrahydroindenyl]zirconium dichloride", G. Erker, M. Aulbach, C. Krüger, S. Werner, J. Organomet. Chem. 1993, 450, 1-7.
"A Cholestenyl-Substituted Bis(indenyl)zirconocene-Derived Homogeneous Ziegler Catalyst for Stereoselective Propene Polymerization", G. Erker, M. Aulbach, D. Wingbermühle, C. Krüger, S. Werner, Chem. Ber. 1993, 126, 755-761.
"Carbonylation of 2-bornenyl(methyl)zirconocene" G. Erker, R. Noe, M. Albrecht, A. L. Rheingold, J. Organomet. Chem. 1993, 450, 137-143.
"The Synthesis of Stable, Isolable Planar-Tetracoordinate Carbon Compounds", M. Albrecht, G. Erker, C. Krüger, Synlett 1993, 441-448.
"EHT Model Studies on Coordination-Sphere Effects in the Elementary Steps of do Transition-Metal-Catalyzed Ziegler-Natta Polymerisation", R. Mohr, H. Berke, G. Erker, Helv. Chim. Acta 1993, 76, 1389-1409.
1992
"Intramolecular [2 + 2] Cycloaddition of Bis(alkenylcyclopentadienyl)zirconium Dihalides: A Novel Way of Synthesizing ansa-Metallocene Complexes", G. Erker, S. Wilker, C. Krüger, R. Goddard, J. Am. Chem. Soc. 1992, 114, 10983-10984.
"A Novel Type of Butadiene Coordination in Cp2Zr(m-(1,2-h2-Zr):(4-h1-Al)-C4H6)(m-Cl)AlCl2", G. Erker, R. Noe, C. Krüger, S. Werner, Organometallics 1992, 11, 4174-4177.
"Planar-tetrakoordinierter Kohlenstoff", G. Erker, Nachr. Chem. Techn. Lab. 1992, 40, 1099-1104.
"s-Hydrocarbyl-Bridged Gallium/Zirconium Complexes Containing Planar-Tetracoordinate Carbon", G. Erker, M. Albrecht, C. Krüger, S. Werner, J. Am. Chem. Soc. 1992, 114, 8531-8536.
"(Aryne)metallocene- and (Alkyne)metallocene-Derived Dimetallic Zirconium/Aluminum Complexes Containing Planar-Tetracoordinate Carbon", G. Erker, M. Albrecht, C. Krüger, S. Werner, P. Binger, F. Langhauser, Organometallics 1992, 11, 3517-3525.
"Eine einfache Synthese von dimetallischen Zirconium/Aluminium-Verbindungen mit planar-tetrakoordiniertem Kohlenstoff", G. Erker, M. Albrecht, S. Werner, M. Nolte, C. Krüger, Chem. Ber. 1992, 125, 1953-1956.
"Structure of an oxazirconacyclohexadiene synthesized by thermolys is of difurylzirconocene", G. Erker, R. Petrenz, C. Krüger, M. Nolte, J. Organomet. Chem. 1992, 431, 297-302.
"Metallorganische Verbindungen zur Erzeugung von Hartstoffschichten", G. Erker, C. Fritze, M. Bendix, S. Wilker, M. Berlekamp, C. Sarter, Dünnschichttechnologien '92, VDI Verlag, Düsseldorf, 1992, 152-157.
"Structures and dynamic features of dinuclear tartratozirconocene complexes", G. Erker, M. Rump, C. Krüger, M. Nolte, Inorg. Chim. Acta 1992, 198, 679-687.
"Planar-Tetracoordinate Carbon: Making Stable Anti-van't Hoff/LeBel Compounds", G. Erker, Comments Inorg. Chem. 1992, 13, 111-131.
"Nitrile-Addition to (h4-Butadiene)zirconocene: The Formation of Organometallic and Metal-Free Hexatrienediamine Derivatives", G. Erker, R. Pfaff, C. Krüger, M. Nolte, R. Goddard, Chem. Ber. 1992, 125, 1669-1673.
"Planar tetracoordinate carbon stabilized in a dimetallic hafnium/aluminium compound: formation and crystal structure of Cp2Hf[m-h1:h2-MeCC(C6H11)][m-CC(C6H11)]AlMe2", M. Albrecht, G. Erker, M. Nolte, C. Krüger, J. Organomet. Chem. 1992, 427, C21-C25.
"What Can One Learn from the Chemistry of Metallacyclic Zirconocene Complexes for Understanding Sharpless Oxidation Catalysis?", G. Erker, in H. Werner, A. G. Griesbeck, W. Adam, G. Bringmann, W. Kiefer (Eds.): Selective Reactions of Metal-Activated Molecules, Vieweg, Braunschweig 1992, 33-49.
"Torsional Isomerism of Bent Metallocene Complexes - The Molecular Structure of Bis(isopropylcyclopentadienyl)zirconiumdichloride in the Solid State", C. Krüger, M. Nolte, G. Erker, S. Thiele, Z. Naturforsch. 1992, 47b, 995-999.
"Stereoselective synthesis with zirconium complexes", G. Erker, Pure Appl. Chem. 1992, 64, 393-401.
"Use of Cholestanylindene-Derived Nonbridged Group 4 Bent Metallocene / Methylalumoxane Catalysts for Stereoselective Propene Polymerization", G. Erker, B. Temme, J. Am. Chem. Soc. 1992, 114, 4004-4006.
"Selektivitätskontrolle durch Temperaturvariation bei der Bildung von isotaktischem versus syndiotaktischem Polypropylen an einem Titanocen/Alumoxan-Katalysator", G. Erker, C. Fritze, Angew. Chem. 1992, 104, 204-206; "Selectivity Control By Temperature Variation in the Formation of Isotactic vs. Syndiotactic Polypropylene with a Titanocene/Alumoxane Catalyst", Angew. Chem. Int. Ed. Engl. 1992, 31, 199-202.
"Chalcogenametallacyclohexadienes by Thermally Induced Migratory Ring Enlargement of Furyl- and Thienylzirconocene Complexes", G. Erker, R. Petrenz, C. Krüger, F. Lutz, A. Weiß, S. Werner, Organometallics 1992, 11, 1646-1655.
1991
"Preparation of metallacyclic titanocene hydrocarbyl complexes and their use in propene polymerization reactions", G. Erker, U. Korek, R. Petrenz, A.L. Rheingold, J. Organomet. Chem. 1991, 421, 215-231.
"Konkurrierendes Auftreten von isomeren (Dialkyltartrato)zirconocen-Dimeren mit Dimetallatricyclus- und zehngliedrigen Dimetallamonocyclus-Gerüsten", G. Erker, S. Dehnicke, M. Rump, C. Krüger, S. Werner, M. Nolte, Angew. Chem. 1991, 103, 1371-1373; "Competing Occurrence of Isomeric (Dialkyltartrato)zirconocene Dimers with Dimetallatricyclic and Ten-Membered Dimetallamonocyclic Frameworks", Angew. Chem. Int. Ed. Engl. 1991, 30, 1349-1351.
"Schwefelverbrückte Metallocen/Aluminium-Verbindungen – Isolierung und dynamisches Verhalten von [(MeCp)2ZrS]2 • AlMe3", G. Erker, M. Albrecht, C. Psiorz, Z. Naturforsch. 1991, 46b, 1571-1577.
"Novel Synthetic Route to Hydrocarbyl-Bridged Dinuclear Zirconium/Aluminum-Complexes Exhibiting a Planar Tetracoordinate Carbon Center", G. Erker, M. Albrecht, C. Krüger, S. Werner, Organometallics 1991, 10, 3791-3793.
"Formation of Metallacyclic (Zirconoxycarbene)vanadium Complexes from CpV(CO)4 and Their Conversion into Ordinary Fischer-Type Carbene Complexes of Vanadium", G. Erker, R. Pfaff, C. Krüger, S. Werner, Organometallics 1991, 10, 3559-3568.
"Cp-Substituent Additivity Effects Controlling the Stereochemistry of the Propene Polymerization Reaction at Conformationally Unrestricted (Cp-CHR1R2)2ZrCl2 / Methylalumoxane Catalysts", G. Erker, R. Nolte, R. Aul, S. Wilker, C. Krüger, R. Noe, J. Am. Chem. Soc. 1991, 113, 7594-7602.
"A heterobimetallic Zr,Hf(m-formaldehyde) complex from [(CH2O)ZrCp2]-dimer and hafnocene dichloride", G. Erker, M. Mena, M. Bendix, J. Organomet. Chem. 1991, 410, C5-C8.
"Hydroboration of Bis(alkenylcyclopentadienyl)zirconium Dichlorides", G. Erker, R. Aul, Chem. Ber. 1991, 124, 1301-1310.
"Stereochemistry and catalysis with zirconium complexes", G. Erker, Pure Appl. Chem. 1991, 63, 797-806.
"Reactions of in situ generated (h2-phenyltrimethylsilylacetylene)zirconocene", G. Erker, R. Zwettler, J. Organomet. Chem. 1991, 409, 179-188.
"Developing Molecular Fischer–Tropsch Type Chemistry: The Triethylboron-Catalyzed Oligomerization of CO-Derived Methylene Groups from a (h2-Formaldehyde)zirconocene Dimer", G. Erker, S. Schmuck, U. Hoffmann, J. Am. Chem. Soc. 1991, 113, 2330-2332.
"Dynamic Binuclear Enediolato- and Catecholato-zirconocene Complexes Relevant to the Structural Problem associated with Sharpless Oxidation Catalysts", G. Erker, R. Noe, J. Chem. Soc. Dalton Trans. 1991, 685-692.
"Struktur des Zweikernkomplexes aus (h2-Formaldehyd)zirconocen-Dimer und t-Butylisothiocyanat", G. Erker, M. Mena, C. Krüger, R. Noe, J. Organomet. Chem. 1991, 402, 67-75.
"A (h1-Iminoacyl)zirconocene Complex Formed by Alkyl Isocyanide Insertion into the Metal to Carbon Bond of (h2-Formaldehyde)zirconocene", G. Erker, M. Mena, C. Krüger, R. Noe, Organometallics 1991, 10, 1201-1203.
"Metallacyclic Zirconoxycarbene Complexes from Metal Carbonyls and (h2-Formaldehyde)zirconocene Dimer", G. Erker, M. Mena, U. Hoffmann, B. Menjón, J.L. Petersen, Organometallics 1991, 10, 291-298.
"Stereoselective a-Alkylation of Metallacyclic Zirconoxycarbene Complexes – A Case of Asymmetric 1,5-Induction", G. Erker, F. Sosna, P. Betz, S. Werner, C. Krüger, J. Am. Chem. Soc. 1991, 113, 564-573.
1990
"Mono(h-cyclopentadienyl)zirconium complexes: from coordination chemistry to enantioselective catalysis", G. Erker, J. Organomet. Chem. 1990, 400, 185-203.
"Thin Zirconium Dioxide and Yttrium Oxide-Stabilized Zirconium Dioxide Films Prepared by Plasma-CVD", H. Wendel, H. Holzschuh, H. Suhr, G. Erker, S. Dehnicke, M. Mena, Modern Physics Letters B Vol. 4, No. 19 1990, 1215-1225.
"Planar Tetracoordinate Carbon in Cp2Zr(m-h1,h2-Me3SiCCPh)(m-Cl)AlMe2", G. Erker, R. Zwettler, C. Krüger, R. Noe, S. Werner, J. Am. Chem. Soc. 1990, 112, 9620-9621.
"Asymmetrische Katalyse mit einer neuen Organometall-Lewis-Säure", G. Erker, C. Sarter, A.A.H. van der Zeijden, C. Krüger, in "Katalyseforschung", Symposiumsband des BMFT 1990, 191-207.
"Synthese und Cycloadditionen von monomerem Selenobenzophenon", G. Erker, R. Hock, C. Krüger, S. Werner, F.-G. Klärner, U. Artschwager-Perl, Angew. Chem. 1990, 102, 1082-1084; "Synthesis and Cycloadditions of Monomeric Selenobenzophenone", Angew. Chem. Int. Ed. Engl. 1990, 29, 1067-1068.
"A binuclear alkenyl-bridged zirconium complex catalyzes the chemoselective hydrogenation of 1,3-cyclooctadiene to cyclooctene", Y. Raoult, R. Choukroun, D. Gervais, G. Erker, J. Organomet. Chem. 1990, 399, C1-C3.
"Reaktionen von (h2-Formaldehyd)zirconocen-Dimer mit Heterokumulenen", G. Erker, M. Mena, S. Werner, C. Krüger, J. Organomet. Chem. 1990, 390, 323-331.
"Transformation of a Platinum Carbonyl into a Platinum Carbene Moiety by Reaction with (h4-Butadiene)zirconocene", G. Erker, B. Menjón, Chem. Ber. 1990, 123, 1327-1329.
"Structure and Dynamics of Zirconocene Complexes in the Solid State Studied by 13C CP/MAS NMR Spectroscopy", R. Benn, H. Grondey, G. Erker, R. Aul, R. Nolte, Organometallics 1990, 9, 2493-2497.
"Enantioselektive Katalyse mit einer neuen Zirconiumtrichlorid-Lewis-Säure mit zweifach bornananelliertem Cyclopentadienylliganden", G. Erker, A.A.H. van der Zeijden, Angew. Chem. 1990, 102, 543-545; "Enantioselective Catalysis with a New Zirconium Trichloride Lewis Acid Containing a 'Dibornacyclopentadienyl' Ligand", Angew. Chem. Int. Ed. Engl. 1990, 29, 512-514.
"Formation and Structure of [Cp2Zr(CH3)OAl(CH3)2]2 - a Neutral Dimethylzirconocene/Alumoxane Adduct", G. Erker, M. Albrecht, S. Werner, C. Krüger, Z. Naturforsch. 1990, 45b, 1205-1209.
"Conversion of Metallacyclic Zirconoxycarbene Complexes Yielding Conventional Fischer-Type Carbene Complexes or Metal-Free Organic Products", G. Erker, F. Sosna, Organometallics 1990, 9, 1949-1953.
"Stereochemische Aspekte bei metallacyclischen Neunring-Zirconoxycarbenkomplexen aus (Butadien)zirconocen, Hexacarbonylwolfram und Ketonen oder Aldehyden", G. Erker, F. Sosna, R. Noe, Chem. Ber. 1990, 123, 821-827.
"Solid-State Structure and Dynamics of a Chiral Metallacyclic (Zirconoxycarbene)tungsten Complex", G. Erker, F. Sosna, J. L. Petersen, R. Benn, H. Grondey, Organometallics 1990, 9, 2462-2467.
"Struktur und Dynamik eines neungliedrigen metallacyclischen Zirconoxycarbenwolfram-Komplexes hergestellt durch Verknüpfung von Cp2Zr(butadien), W(CO)6 und Me3C-CN", G. Erker, F. Sosna, R. Zwettler, C. Krüger, Z. anorg. allg. Chem. 1990, 581, 16-24.
"Developing potentially useful organometallic Lewis acid catalysts: (h-cyclopentadienyl)zirconium trichloride derivatives", G. Erker, C. Sarter, M. Albrecht, S. Dehnicke, C. Krüger, E. Raabe, R. Schlund, R. Benn, A. Rufinska, R. Mynott, J. Organomet. Chem. 1990, 382, 89-102.
"Reactions of b-CH Agostic Alkenylzirconocene Complexes", G. Erker, R. Zwettler, C. Krüger, I. Hyla-Kryspin, R. Gleiter, Organometallics 1990, 9, 524-530.
"Formation of b-CH Agostic Alkenylzirconocene Complexes", I. Hyla-Kryspin, R. Gleiter, C. Krüger, R. Zwettler, G. Erker, Organometallics 1990, 9, 517-523.
1989
"Carbon-carbon Bond Formation by Means of Zirconocene-derived Carbene Complexes", G. Erker, M. Aulbach, M. Mena, R. Pfaff, F. Sosna, Chemica Scripta 1989, 29, 451-456.
"Molekülstruktur eines H2O-Adduktes der Organometall-Lewissäure CpZrCl3", G. Erker, C. Sarter, S. Werner, C. Krüger, J. Organomet. Chem. 1989, 377, C55-C58.
"Interconversion of (h3-Allyl)(h4-conjugated-diene)(h5-cyclopentadienyl)zirconium and hafnium Stereoisomers. Evidence for the Simultaneous Rearrangement of Diene and Allyl Ligands", C. Sontag, H. Berke, C. Sarter, G. Erker, Helv. Chim. Acta 1989, 72, 1676-1689.
"Stereoselektive Insertion von Aldehyden und Ketonen in die Metall-Kohlenstoff-Bindung eines (h6-Fulven)titan-Komplexes", G. Erker, U. Korek, Z. Naturforsch. 1989, 44b, 1593-1598.
"Reaction of (h4-butadiene)-zirconocene and -hafnocene with 2-methyl-2-nitrosopropane", G. Erker, M. G. Humphrey, J. Organomet. Chem. 1989, 378, 163-169.
"Studies on Hydrometalation Reactions: An Improved Hydrozirconation Reagent and the Structure of a (MeCp)2ZrCl(alkenyl) Carbonylation Product", G. Erker, R. Schlund, C. Krüger, Organometallics 1989, 8, 2349-2355.
"Isonitrile Insertion of a b-CH Agostic Alkenylzirconocene Complex", G. Erker, R. Zwettler, C. Krüger, Chem. Ber. 1989, 122, 1377-1379.
"New (Butadiene)zirconocene Carbene Complex Chemistry", M. G. Humphrey, F. Sosna, G. Erker, R. Zwettler, C. Krüger, in "Advances in Metal Carbene Chemistry", U. Schubert (ed.), Kluwer Academic Publishers 1989, 163-165.
"Metallacyclic Metaloxycarbene Complexes from 1,2-Didehydrobenzene Group 4 Metallocenes and Metal Carbonyls", G. Erker, U. Dorf, R. Lecht, M. T. Ashby, M. Aulbach, R. Schlund, C. Krüger, R. Mynott, Organometallics 1989, 8, 2037-2044.
"Doppelte Stereodifferenzierung bei der Bildung von isotaktischem Polypropylen an chiralen (C5H4CHMePh)2ZrCl2 / Methylalumoxan-Katalysatoren", G. Erker, R. Nolte, Y.-H. Tsay, C. Krüger, Angew. Chem. 1989, 101, 642-644; "Double Stereodifferentiation in the Formation of Isotactic Polypropylene at Chiral (C5H4CHMePh)2ZrCl2 / Methylalumoxane Catalysts", Angew. Chem. Int. Ed. Engl. 1989, 28, 628-629.
"Some group 4 metallocene derived carbene complex chemistry", G. Erker, F. Sosna, U. Hoffmann, J. Organomet. Chem. 1989, 372, 41-52.
"Boron hydride insertion into the Zr–C bond of dimeric (h2-formaldehyde)zirconocene", G. Erker, U. Hoffmann, R. Zwettler, C. Krüger, J. Organomet. Chem. 1989, 367, C15-C17.
"Dimeres [Cp2Zr(CH2O)], ein neuer (h2-Formaldehyd)metall-Komplex aus Kohlenmonoxid", G. Erker, U. Hoffmann, R. Zwettler, P. Betz, C. Krüger, Angew. Chem. 1989, 101, 644-645; "Dimeric [Cp2Zr(CH2O)], a Novel (h2-Formaldehyde)metal Complex from Carbon Monoxide", Angew. Chem. Int. Ed. Engl. 1989, 28, 630-631.
"Tellurobenzaldehyd durch "Staudinger-Chalcogenierung" des Ylids Benzylidentriphenylphosphoran", G. Erker, R. Hock, Angew. Chem. 1989, 101, 181-182; "Tellurobenzaldehyde by Staudinger-Chalcogenation of the Ylide Benzylidenetriphenylphosphorane", Angew. Chem. Int. Ed. Engl. 1989, 28, 179-180.
"Some novel structural and chemical aspects of Cp-substituted bent metallocene complexes", G. Erker, Pure Appl. Chem. 1989, 61, 1715-1722.
"Gehinderte (RCp)–M Rotation bei t-Alkyl Cp-substituierten (h4-s-cis-Butadien)zirconocen-Komplexen", G. Erker, R. Nolte, C. Krüger, R. Schlund, R. Benn, H. Grondey, R. Mynott, J. Organomet. Chem. 1989, 364, 119-132.
"Formation of a Conjugated Oxametallacyclohexadiene by Dyotropic Rearrangement of Bis(2-furyl)zirconocene", G. Erker, R. Petrenz, J. Chem. Soc., Chem. Commun. 1989, 345-346.
"p-Conjugation and Dynamic Behavior in Doubly Acetylide-Bridged Binuclear Group 4 Bent Metallocene Complexes", G. Erker, W. Frömberg, R. Benn, R. Mynott, K. Angermund, C. Krüger, Organometallics 1989, 8, 911-920.
"Nine-Membered Metallacyclic Metaloxycarbene Complexes by Means of Sequential Coupling of Butadiene with a Ketone and a Metal Carbonyl at Bis(cyclopentadienyl)zirconium", G. Erker, F. Sosna, R. Zwettler, C. Krüger, Organometallics 1989, 8, 450-454.
"Hindered h-Cyclopentadienyl-Metal Rotation Caused by Lateral Interaction of Cp-Bonded Substituents at Chalcogen-Bridged Binuclear Bent Metallocene Complexes [(RCp)2ZrX]2", G. Erker, R. Nolte, G. Tainturier, A. Rheingold, Organometallics 1989, 8, 454-460.
"Metallocen-Carbenkomplexe und verwandte Verbindungen des Titans, Zirconiums und Hafniums", G. Erker, Angew. Chem. 1989, 101, 411-426; "Metallocene Carbene Complexes and Related Compounds of Titanium, Zirconium, and Hafnium", Angew. Chem. Int. Ed. Engl. 1989, 28, 397-412.
1988
"Dynamic NMR spectra and thermolysis of (RCp)2Zr(CH2OCH3)2: Evidence for the insertion of a methylene group from a metallaoxirane into a Zr-C s-bond", G. Erker, R. Schlund, M. Albrecht, C. Sarter, J. Organomet. Chem. 1988, 353, C27-C29.
"Selective Formation of Alkenylcyclopentadienyl Substituents by Means of Olefin/Butadiene Coupling at Zirconium", G. Erker, R. Aul, Organometallics 1988, 7, 2070-2072.
"Die Bildung von b-C–H agostischen Alkenylzirconocen-Komplexen bei der anormalen Hydrozirconierung von Alkinen", G. Erker, R. Zwettler, C. Krüger, R. Schlund, I. Hyla-Kryspin, R. Gleiter, J. Organomet. Chem. 1988, 346, C15-C18.
"Bildung diastereomerer Zirconiooxycarbenkomplexe durch Umsetzung von Bis(tert-butyl-Cp)2Zr(butadien) mit Hexacarbonylwolfram", G. Erker, R. Lecht, F. Sosna, S. Uhl, Y.-H. Tsay, C. Krüger, H. Grondey, R. Benn, Chem. Ber. 1988, 121, 1069-1074.
"Dynamics of Organometallic Compounds in the Solid-State Studied by 2D Exchange 13C CP/MAS NMR. (h5-RCp) Rotation and Diene Topomerization in (h5-RCp)2M(h4-C4H6) (M = Zr, Hf)", R. Benn, H. Grondey, R. Nolte, G. Erker, Organometallics 1988, 7, 777-778.
"Sequential p-Ligand Exchange from Metallacyclopentanes: Synthesis and Structure of 1,1-Bis(cyclopentadienyl)-2,3-diphenyl-1-hafnacyclopent-2-ene", G. Erker, U. Dorf, A. L. Rheingold, Organometallics 1988, 7, 138-143.
"Cp2Zr(N=CPh2)2, an Organometallic Heteroallene-Type Schiff Base Derivative Relevant to Describing sp2-Hybridized Nitrogen Inversion", G. Erker, W. Frömberg, C. Krüger, E. Raabe, J. Am. Chem. Soc. 1988, 110, 2400-2405.
"Unexpected open-chain molecular structure of a titanocenyl-substituted dimethyl ether", G. Erker, R. Schlund, C. Krüger, J. Organomet. Chem. 1988, 338, C4-C6.
1987
"Carbene Complex Syntheses with Group 4 Metallocene Reagents", G. Erker, in "Organometallics in Organic Synthesis", A. de Meijere, H. tom Dieck, Eds., Springer Verlag, Berlin, Heidelberg, 1987, 143-167.
"CpZr(allyl)3: the Molecular Structure of a p- and s-Dynamic Allyl Transition Metal Complex", G. Erker, K. Berg, K. Angermund, C. Krüger, Organometallics 1987, 6, 2620-2621.
"Synthese eines heteroatomstabilisierten Rhodiumcarbenkomplexes durch Reaktion von CpRh(CO)2 mit (Butadien)zirconocen", G. Erker, R. Lecht, Y.-H. Tsay, C. Krüger, Chem. Ber. 1987, 120, 1763-1765.
"Synthese und Thermolyse von a-Titanocenyl-substituierten Dimethylethern: die überraschende Bildung von [(CH3Cp)Ti(OCH3)Cl]4", G. Erker, C. Krüger, R. Schlund, Z. Naturforsch. 1987, 42b, 1009-1016.
"Thermally Induced Reaction of the Ylide CH3CH=PPh3 with Diarylzirconocene Complexes; the Formation of Unusual Metallacyclic Phospha-Allyl Type Products", G. Erker, P. Czisch, R. Benn, A. Rufinska, R. Mynott, .J. Organomet. Chem. 1987, 328, 101-107.
Cp2Zr(butadien) / (C5H4X)Co(CO)2 (X = H, Cl) Gleichgewichtslage durch Substituenten", G. Erker, R. Lecht, C. Krüger, Y.-H. Tsay, H. Bönnemann, J. Organomet. Chem. 1987, 326, C75-C78.
"Cobalt Carbene Complexes from (Butadiene)zirconocene and (Cyclopentadienyl)cobalt Carbonyls: An Example of a Nonnucleophilic Synthesis of Fischer-Type Carbene Complexes", G. Erker, R. Lecht, J. L. Petersen, H. Bönnemann, Organometallics 1987, 6, 1962-1967.
"Carbenvanadium-Komplexe durch Reaktion von (Dien)metallocenen mit [CpV(CO)4]", G. Erker, R. Lecht, R. Schlund, K. Angermund, C. Krüger, Angew. Chem. 1987, 99, 708-710; "Vanadium Carbene Complexes by Reaction of (Diene)metallocenes with [CpV(CO)4]", Angew. Chem. Int. Ed. Engl. 1987, 26, 666-668.
"Synthesis of group 4 metallocene-substituted ylides and their reaction with ketones", G. Erker, P. Czisch, R. Mynott, J. Organomet. Chem. 1987, 334, 91-108.
"C-H Aktivierung durch reaktive Metall(olefin)komplexe: Cyclometallierungsreaktionen Cp-substituierter Dien- und Arin-Metallocenkomplexe", G. Erker, T. Mühlenbernd, J. Organomet. Chem. 1987, 319, 201-211.
"Uncommon Structural Features of [Cp2Zr-OC(Ph) Mo(CO)5]2O, a Zr-O-Zr-Bridged Tetranuclear Bis(carbene)metal Complex Exhibiting a Planar s-Framework", G. Erker, U. Dorf, C. Krüger, Y.-H. Tsay, Organometallics 1987, 6, 680-682.
"Isomerisierungswege bei tert-ButylCp-substituierten (Dien)zirconocen- und -hafnocen-Komplexen", G. Erker, T. Mühlenbernd, A. Rufinska, R. Benn, Chem. Ber. 1987, 120, 507-519.
1986
"The Three-membered Metallacyclic Structure of (h5 C5H5)2ZrCl-substituted Dimethyl Ether", G. Erker, R. Schlund, C. Krüger, J. Chem. Soc., Chem. Commun. 1986, 1403-1404.
"Metallocen-Chalcogen-Verbindungen: eine einfache Synthese von [(h-C5H4R)2ZrTe]2 Komplexen mit einem planaren metallacyclischen Vierringgerüst", G. Erker, T. Mühlenbernd, R. Nolte, J. L. Petersen, G. Tainturier, B. Gautheron, J. Organomet. Chem. 1986, 314, C21-C24.
"Neue Wege zu Carbenkomplexen: Reaktion von (Butadien)zirconocen mit Eisencarbonyl-Komplexen", G. Erker, R. Lecht, J. Organomet. Chem. 1986, 311, 45-55.
"Metallacyclische Vierringsysteme: Zwei unabhängige Wege zu Bis(cyclopentadienyl)titanacyclobutabenzol", H. J. R. de Boer, O. S. Akkerman, F. Bickelhaupt, G. Erker, P. Czisch, R. Mynott, J. M. Wallis, C. Krüger, Angew. Chem. 1986, 98, 641-643; "Metallacyclic Four-Membered Ring Systems: Two Independent Routes to Bis(cyclopentadienyl)titanacyclobutabenzene", Angew. Chem. Int. Ed. Engl. 1986, 25, 639-640.
"Ungewöhnliche Verbrückung der Metallzentren im dimeren Bis(h-methylcyclopentadienyl)phenylethinylzirconium", G. Erker, W. Frömberg, R. Mynott, B. Gabor, C. Krüger, Angew. Chem. 1986, 98, 456-457; "Unusual Bridging of the Metal Centers in Dimeric Bis(h-methylcyclopentadienyl)phenylethynylzirconium", Angew. Chem. Int. Ed. Engl. 1986, 25, 463-465.
"Thermally Induced Reaction of a Group 4 Bent Metallocene Unit with Elemental Sulfur and Selenium: The Formation of Four-Membered Metallacycles", G. Erker, T. Mühlenbernd, R. Benn, A. Rufinska, G. Tainturier, B. Gautheron, Organometallics 1986, 5, 1023-1028.
"The Metallaoxirane-Type Structure of Cp2ZrCl(CPh2OCH3) and the Question of Modeling the Chemistry of Alkylidene Units on a Metal Oxide Surface", G. Erker, U. Dorf, J. L. Atwood, W. E. Hunter, J. Am. Chem. Soc. 1986, 108, 2251-2257.
"Dimeric (h2-Benzophenone)zirconocene: Its Remarkable Structure and Chemistry", G. Erker, U. Dorf, P. Czisch, J. L. Petersen, Organometallics 1986, 5, 668-676.
"Zur reduktiven Kupplung von CO: Bildung eines 1:1-Adduktes aus h2-Keton- und Endiolato-Komplex bei der Carbonylierung von Bis(cyclopentadienyl)hafnacyclobutan", G. Erker, P. Czisch, R. Schlund, K. Angermund, C. Krüger, Angew. Chem. 1986, 98, 356-357; "Reductive Coupling of CO: Formation of a 1:1 Adduct of h2-Ketone- and Enediolato-Complex upon Carbonylation of Bis(cyclopentadienyl)hafnacyclobutane", Angew. Chem. Int. Ed. Engl. 1986, 25, 364-365.
" 'Agostic' Metal-Alkenyl b-CH Interaction in (C5H4Me)2ZrCl(CH=CMe)ZrCl(C5H5)2", G. Erker, W. Frömberg, K. Angermund, R. Schlund, C. Krüger, J. Chem. Soc., Chem. Commun. 1986, 372-374.
"Carbonylkomplexe "früher" Übergangsmetalle: Darstellung und Struktur von Cp2Zr(CO)[P(OCH3)3]", G. Erker, U. Dorf, C. Krüger, K. Angermund, J. Organomet. Chem. 1986, 301, 299-312.
"(h4-Butadiene)bis(pentamethylcyclopentadienyl)thorium", G. Erker, T. Mühlenbernd, R. Benn, A. Rufinska, Organometallics 1986, 5, 402-404.
1985
"Stereoelektronische Kontrolle bei der Wechselwirkung gewinkelter Metallocene mit organischen Liganden", G. Erker, Jahrbuch der Akademie der Wissenschaften in Göttingen, 1985, 19-28.
"The Reaction of Thermally Generated (Ethylene)hafnocene with Methylenetriphenylphosphorane: Competing Reaction Paths Leading to Cp2HfC2H5(CH=PPh3) and a Hafnacyclobutane", G. Erker, P. Czisch, C. Krüger, J. M. Wallis, Organometallics 1985, 4, 2059-2060.
"Umsetzung von thermisch generiertem (h2-Arin)zirconocen mit W(CO)6, eine neue Synthese von Carbenkomplexen", G. Erker, U. Dorf, R. Mynott, Y.-H. Tsay, C. Krüger, Angew. Chem. 1985, 97, 572-574; "Reaction of Thermally Generated (h2-Aryne)zirconocene with W(CO)6, a Novel Route to Carbene Complexes", Angew. Chem. Int. Ed. Engl. 1985, 24, 584-585.
"Reaction of Zirconocene Complexes with Phosphorus Ylides: Evidence for the Formation of Cp2Zr(C6H5)CHPPh3 from Diphenylzirconocene and CH2PPh3 by an Aryne Mechanism", G. Erker, P . Czisch, R. Mynott, Y.-H. Tsay, C. Krüger, Organometallics 1985, 4, 1310-1312.
"Die Bildung eines Zirconium-substituierten Phosphor-Ylids durch sigmatrope Wasserstoffverschiebung", G. Erker, P. Czisch, R. Mynott, Z. Naturforsch. 1985, 40b, 1177-1180.
"Metallocen-Torsionsisomerie: Die gehinderte Cp-Rotation in (s-cis-h-Butadien)bis(h-tert-butylcyclopentadienyl)zirconium", G. Erker, T. Mühlenbernd, R. Benn, A. Rufinska, Y.-H. Tsay, C. Krüger, Angew. Chem. 1985, 97, 336-337; "Torsional Isomerism in Metallocenes: Hindered Cp-Rotation in (s-cis-h-Butadiene)bis(h-tert-butylcyclopentadienyl)zirconium", Angew. Chem. Int. Ed. Engl. 1985, 24, 321-323.
"(2,3-Bis(methylen)bicyclo[2.2.2]octan)zirconocen: Synthese, Struktur und elektrochemische Reduktion", G. Erker, K. Engel, C. Krüger, Y.-H. Tsay, E. Samuel, P. Vogel, Z. Naturforsch. 1985, 40b, 150-157.
"Reaktionen von Bis(h-cyclopentadienyl)zirconiumhydriden mit (Iminoacyl)zirconocen-Komplexen", W. Frömberg, G. Erker, J. Organomet. Chem. 1985, 280, 355-363.
"Hydrozirconierung von Nitrilen: die Bildung ein- und zweikerniger (Alkylidenamido)zirconocen-Komplexe", W. Frömberg, G. Erker, J. Organomet. Chem. 1985, 280, 343-354.
"Structural and Chemical Features of Early Transition-Metal Compounds: Notable Differences between Corresponding Pairs of (s-cis-h4-Conjugated diene)zirconocene and hafnocene Complexes", C. Krüger, G. Müller, G. Erker, U. Dorf, K. Engel, Organometallics 1985, 4, 215-223.
"Die Bildung chiraler Mono(h5-cyclopentadienyl)zirconium(II)-Komplexe", G. Erker, K. Berg, R. Benn, G. Schroth, Chem. Ber. 1985, 118, 1383-1397.
"The Remarkable Features of (h4-Conjugated Diene)zirconocene and -hafnocene Complexes", G. Erker, C. Krüger, G. Müller, Adv. Organomet. Chem. 1985, 24, 1-39.
1984
"Reaction of Diene Group 4 Metallocene Complexes with Metal Carbonyls: A Novel Entry to Fischer-Type Carbene Complexes", G. Erker, U. Dorf, R. Benn, R.-D. Reinhardt, J. L. Petersen, J. Am. Chem. Soc. 1984, 106, 7649-7650.
"Wasserstoff-Wanderungen in Organometall-Verbindungen: Die thermisch induzierte Isomerisierung des (h-Cyclopentadienyl)(h3-1,1-Dimethylallyl)(h4-Isopren)zirconiums", K. Berg, G. Erker, J. Organomet. Chem. 1984, 270, C53-C55.
"Diastereoselektive Bildung substituierter (h3-Allyl)(h4-dien)ZrCp-Komplexe durch intramolekulare Ligandenwechselwirkung", G. Erker, K. Berg, R. Benn, G. Schroth, Angew. Chem. 1984, 96, 621-622; "Diastereoselective Formation of Substituted (h3-Allyl)(h4-diene)ZrCp Complexes by Intramolecular Ligand Interaction", Angew. Chem. Int. Ed. Engl. 1984, 23, 625-626.
"(h3-Allyl)(h4-butadien)(h5-cyclopentadienyl)zirconium, ein System isomerer Monocyclopentadienylzirconium(II)-Verbindungen", G. Erker, K. Berg, C. Krüger, G. Müller, K. Angermund, R. Benn, G. Schroth, Angew. Chem. 1984, 96, 445-446; "(h3-Allyl)(h4-butadiene)(h5-cyclopentadienyl)zirconium, a System of Isomeric Monocyclopentadienylzirconium(II) Compounds", Angew. Chem. Int. Ed. Engl. 1984, 23, 455-456.
"Chiralitätseigenschaften von Mono(h-cyclopentadienyl)thiobenzamidatozirconium(IV)-Komplexen", K. Berg, G. Erker, J. Organomet. Chem. 1984, 263, 37-44.
"Hydrozirconierung von Nitrilen: Nachweis einer linearen Heteroallen-Struktur bei (Benzylidenamido)zirconocenchlorid", G. Erker, W. Frömberg, J. L. Atwood, W. E. Hunter, Angew. Chem. 1984, 96, 72-73; "Hydrozirconation of Nitriles: Proof of a Linear Heteroallene Structure in (Benzylideneamido)zirconocene Chloride", Angew. Chem. Int. Ed. Engl. 1984, 23, 68-69.
"Transfer and Coupling of Zirconocene-Bound Alkenyl Ligands. An Alternative Route to (s-trans-h4-Conjugated diene)ZrCp2 Complexes", P. Czisch, G. Erker, H.-G. Korth, R. Sustmann, Organometallics 1984, 3, 945-947.
"Approaching the s2,p Structural Limit of s-cis-h4-Conjugated Diene Zirconocene Complexes", G. Erker, K. Engel, C. Krüger, G. Müller, Organometallics 1984, 3, 128-133.
"Carbonylation of Zirconocene Complexes", G. Erker, Acc. Chem. Res. 1984, 17, 103-109.
1983
"Umkehrung der Regioselektivität bei der zirconoceninduzierten Verknüpfung eines Ketons mit Isopren", G. Erker, U. Dorf, Angew. Chem. 1983, 95, 800; "Reversal of the Regioselectivity in the Zirconocene-Induced Coupling of a Ketone with Isoprene", Angew. Chem. Int. Ed. Engl. 1983, 22, 777-778.
"Die Bildung (E)(Z)-isomerer Alkenylzirconocen-Komplexe", P. Czisch, G. Erker, J. Organomet. Chem. 1983, 253, C9-C11.
"Die zirconoceninduzierte Verknüpfung von Butadien mit Carbonylverbindungen", G. Erker, K. Engel, J. L. Atwood, W. E. Hunter, Angew. Chem. 1983, 95, 506-507; "The Zirconocene-Induced Coupling of Butadiene with Carbonyl Compounds", Angew. Chem. Int. Ed. Engl. 1983, 22, 494-495.
"Reactions of Vinylzirconocene Complexes with a Zirconium Hydride. The Unexpected Formation of [m-(b-h1:a,b-h2-Styryl)](m-chloro)bis[bis(h5-cyclopentadienyl)zirconium], a Binuclear (Olefin)zirconocene Complex", G. Erker, K. Kropp, J. L. Atwood, W. E. Hunter, Organometallics 1983, 2, 1555-1561.
"Fischer-Tropsch Intermediates: Tris[(h2-formaldehyde)zirconocene] from the Carbonylation of a Zirconium Hydride", K. Kropp, V. Skibbe, G. Erker, C. Krüger, J. Am. Chem. Soc. 1983, 105, 3353-3354.
"Cp2M(s-trans-h4-butadiene) Complexes from Zirconocene and Hafnocene Dihalides and "Magnesium-Butadiene"", U. Dorf, K. Engel, G. Erker, Organometallics 1983, 2, 462-463.
"Zur Bildung metallacyclischer Fünfringverbindungen: Regioselektivität der Addition von Alkinen an Zirconocenkomplexe", V. Skibbe, G. Erker, J. Organomet. Chem. 1983, 241, 15-26.
1982
"Katalysatordesaktivierung am Beispiel der Zirconocen- und Hafnocen-induzierten Ethylen-Dimerisierung", U. Dorf, K. Engel, G. Erker, Angew. Chem. 1982, 94, 916-919; "Catalyst Deactivation during Zirconocene- and Hafnocene-Induced Ethylene Dimerization", Angew. Chem. Int. Ed. Engl. 1982, 21, 914-915.
"Die Reaktion von (Butadien)zirconocen und -hafnocen mit Ethylen", G. Erker, K. Engel, U. Dorf, J. L. Atwood, W. E. Hunter, Angew. Chem , 94, 915-916; "The Reaction of (Butadiene)zirconocene and –hafnocene with Ethylene", Angew. Chem. Int. Ed. Engl. 1982, 21, 914.
"(2,9:6,12-h-2,3,5,6-Tetrakis(methylen)bicyclo[2.2.2]octan)zirconocen, eine isolierbare Bis(olefin)-zirconium(II)-Verbindung", G. Erker, K. Engel, P. Vogel, Angew. Chem. 1982, 94, 791-792; "(2,9:6,12-h-2,3,5,6-Tetrakis(methylene)bicyclo[2.2.2]octane)zirconocene, an Isolable Bis(olefin)-zirconium(II) Compound", Angew. Chem. Int. Ed. Engl. 1982, 21, 782.
"Stereospecific Formation of Five-Membered Metallacycles. Zirconaindans from Thermally Generated (h2-Dehydrobenzene)dicyclopentadienylzirconium(II) and cis- and trans-Stilbene", K. Kropp, G. Erker, Organometallics 1982, 1, 1246-1247.
"Convenient Route to Monocyclopentadienylzirconium(IV) Complexes", G. Erker, K. Berg, L. Treschanke, K. Engel, Inorg. Chem. 1982, 21, 1277-1278. G. Erker, K. Berg, C. Sarter, in Organometallic Syntheses, Eds. R. B. King, J. J. Eisch, Elsevier, Amsterdam 1986, vol. 3, p. 29.
"(s-trans-h4-Dien)zirconocen-Komplexe", G. Erker, J. Wicher, K. Engel, C. Krüger, Chem. Ber. 1982, 115, 3300-3309.
"Zur Carbonylierung von Zirconocenhydrid-Komplexen", G. Erker, K. Kropp, C. Krüger, A.-P. Chiang, Chem. Ber. 1982, 115, 2447-2460.
"Dyotrope Umlagerungen zweikerniger m-Aldehyd-zirconocen-Komplexe", G. Erker, K. Kropp, Chem. Ber. 1982, 115, 2437-2446.
"Radikalische Reaktionswege bei thermisch induzierten Umsetzungen von Zirconocenkomplexen", G. Erker, F. Rosenfeldt, Tetrahedron 1982, 38, 1285-1292.
"h2-Benzophenonzirconocen, ein Modell für das Reaktionsverhalten eines Metallaoxirans?", G. Erker, F. Rosenfeldt, J. Organomet. Chem. 1982, 224, 29-42.
1981
"Evidence for Anchimeric Assistance by the Cp2ZrCl-Group in the Homolytic Cleavage of an O-CH3 Bond", G. Erker, F. Rosenfeldt, Tetrahedron Letters 1981, 22, 1379-1382.
1980
"Synthesis, Structure, and Equilibration of s-Cis- and s-Trans-h4-conjugated Diene-Zirconocene Complexes", G. Erker, J. Wicher, K. Engel, F. Rosenfeldt, W. Dietrich, C. Krüger, J. Am. Chem. Soc. 1980, 102, 6344-6346.
"Reversal of the Benzophenone Reactivity upon h2-Complexation to Bis(h5-cyclopentadienyl)zirconium", F. Rosenfeldt, G. Erker, Tetrahedron Letters 1980, 21, 1637-1640.
"Die Bildung von C–C-Bindungen bei der Carbonylierung von 1,1-Bis(h5-cyclopentadienyl)zirconaindan", G. Erker, K. Kropp, J. Organomet. Chem. 1980, 194, 45-60.
"Bildung und Umlagerung stereoisomerer Acetylkomplexe bei der Carbonylierung von Bis(h5-cyclopentadienyl)dimethylzirconium", G. Erker, F. Rosenfeldt, J. Organomet. Chem. 1980, 188, C1-C4.
"Isolierung und Energiemulde des 2,3-Dimethylen-1,4-cyclohexadiyl-Diradikals", W. R. Roth, M. Biermann, G. Erker, K. Jelich, W. Gerhartz, H. Görner, Chem. Ber. 1980, 113, 586-597.
1979
"Equilibrium between Metallaindans and Aryne Olefin-Metal Complexes", G. Erker, K. Kropp, J. Am. Chem. Soc. 1979, 101, 3659-3660.
1978
"Die Bildung stereoisomerer (h2-Aroyl)arylbis(h5-cyclopentadienyl)zirconium(IV)-Verbindungen" G. Erker, F. Rosenfeldt, Angew. Chem. 1978, 90, 640-641, "The Formation of Stereoisomeric (h2-Aroyl)arylbis(h5-cyclopentadienyl)zirconium(IV) Compounds", Angew. Chem. Int. Ed. Engl. 1978, 17, 605-606.
1977
"The Reaction of Intermediate Zirconocene-Aryne Complexes with C-H Bonds in the Thermolysis of Diarylzirconocenes", G. Erker, J. Organomet. Chem. 1977, 134, 189-202.
1975
"Regeneration of Ketones from Tosylhydrazones, Arylhydrazones, and Oximes by Exchange with Acetone", S. R. Maynez, L. Pelavin, G. Erker, J. Org. Chem. 1975, 40, 3302-3303.
"Photoelektronenspektren organischer Verbindungen: 7,8-Dimethylenbicyclo[2.2.2]octa-2,5-dien und verwandte Verbindungen", H.-U. Pfeffer, M. Klessinger, G. Erker, W. R. Roth, Chem. Ber. 1975, 108, 2923-2933.
"1,2,3-Butatrien durch Diels-Alder-Spaltung", W. R. Roth, H. Humbert, G. Wegener, G. Erker, H.-D. Exner, Chem. Ber. 1975, 108, 1655-1658.
1973
"Thermische Umlagerung von 2-Methylentricyclo[4.1.0.01,3]heptan", W. R. Roth, G. Erker, Angew. Chem. 1973, 85, 512, "Thermal Rearrangement of 2-Methylenetricyclo[4.1.0.01,3]heptane", Angew. Chem. Int. Ed. Engl. 1973, 12, 505.
"Zum Mechanismus der Allendimerisierung", W. R. Roth, M. Heiber, G. Erker, Angew. Chem. 1973, 85, 511-512, "Mechanism of Allenic Dimerization", Angew. Chem. Int. Ed. Engl. 1973, 12, 504-505.
"Diradikale als Intermediärprodukte chemischer Reaktionen; 2,3-Dimethylen-1,4-cyclohexadiyl", W. R. Roth, G. Erker, Appl. Chem. 1973 , 85 , 510-511, "Diradicals as Intermediates in Chemical Reactions; 2,3-Dimethylene-1,4-cyclohexadiyl", Angew. Chem. Int. Ed. Engl. 1973 , 12 , 503-504.