Organisch-Chemisches Institut	Tel. (0251) 83-33210 Fax: (0251) 83-39772 e-mail: orgchem@uni-muenster.de www: uni-muenster.de/Chemie.oc/
Corrensstrasse 40 48149 Münster Geschäftsführender Direktor: Prof. Dr. Stefan Grimme
Forschungsschwerpunkte 2003 - 2004    zurück    weiter

Prof. Dr. Gerhard Erker Organometallic chemistry and catalysis   Organometallic chemistry and catalysis: Chiral Lewis acids; homogeneous metallocene Ziegler-Natta-catalysts; olefin-polymerization; CO-conversion; metal-induced CC-coupling; organometallic and organic stereochemistry; dynamic metal containing compounds; enantioselective catalysis; chemical vapour deposition; chalcogenocarbonyl compounds; template reactions; planar-tetracoordinate carbon compounds; bioorganometallic chemistry. Funding: Deutsche Forschungsgemeinschaft; Fonds der Chemischen Industrie; Alexander von Humboldt-Stiftung Publications: 2003 "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. "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. "Molecular-Template-Mediated Chemical Decoration", S. Hoeppener, J. Wonnemann, L. Chi, G. Erker, H. Fuchs, Chem. Phys.Chem. 2003, 4, 490-494. "The (butadiene)metal complex/B(C6F5)3 pathway to homogeneous single component Ziegler-Natta catalyst systems", G. Erker, Chem. Commun. 2003, 1469-1476. "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. "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. "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. "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. "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. "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. "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. "Preparation of Optically Active α-Amino[3]ferrocenophanes - Building Blocks for Chelate Ligands in Asymmetric Catalysis", P. Liptau, L. Tebben, Kehr, B. Wibbeling, R. Fröhlich, G. Erker, Eur. J. Inorg. Chem. 2003, 3590-3600; 4261. "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. "Formation of Dinuclear Titanium and Zirconium Complexes by Olefin Metathesis - a Case of a 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. "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. "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. 2004 "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. "(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. "Responsive Iron Neighboring Group Participation in Amino-Substituent-Stabilized [3]Ferrocenophane α-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. "The (Butadiene)zirconocenes and Related Compounds", G. Erker, G. Kehr, R. Fröhlich, Adv. Organomet. Chem. 2004, 51, 109-162. "(µ-Methylene)bis(methylzirconocene): Preparation, Molecular Structure, and Thermal Disproportionation", M. Hogenbirk, G. Schat, O. S. Akkerman, F. Bickelhaupt, J. Schottek, M. Albrecht, R. Fröhlich, G. Kehr, G. Erker, H. Kooijman, A. L. Spek, Eur. J. Inorg. Chem. 2004, 1175-1182. "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. "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. "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. "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. "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. "Formation of a bifunctional zirconocene complex that favours intramolecular -B(C6F5)3 addition to a Cp ring over σ-ligand abstraction", M. Hill, G. Kehr, G. Erker, O. Kataeva, R. Fröhlich, Chem. Commun. 2004, 1020-1021. "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, 59b, 917-920. "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. "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. "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. "The Synthesis of Optically Active Primary Amino[3]ferrocenophanes", L. Tebben, G. Kehr, R. Fröhlich, G. Erker, Synthesis 2004, 12, 1971-1976. "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. "Structural and Spectroscopic Evidence for Intramolecular Agostic MúúúH-C and Dative Zr F-C(ortho) Interactions in the Zwitterionic Group 4 Metal Betaine Complexes, [(C5H4)SiMe2(N-t-Bu)]M(+)(µ-C4H6)(B(C6F5)3, M = Ti, Zr", F. Hannig, R. Fröhlich, K. Bergander, G. Erker, J. L. Petersen, Organometallics 2004, 23, 4495-4502. "Formation and Structure of a Bis(cyclopentadienyl)(formamidinato)zirconium Cation Complex", C. Cornelißen, G. Erker, G. Kehr, R. Fröhlich, Z. Naturforsch. 2004, 59b, 1246-1252. "Some selected chapters from the (butadiene)zirconocene story", G. Erker, G. Kehr, R. Fröhlich, J. Organomet. Chem. 2004, 689, 4305-4318. "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. 2005 "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. Fröhlich, Organometallics 2005, 24, 214-225. "Bioorganometallic Chemistry: Reactions of (Methyl)titanocene 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, 92-99. "Bis(enamino-Cp) Group 4 metal complex chemistry: Developing a Mannich-type carbon-carbon coupling reaction at the bent metallocene framework", S. Knüppel, C. Wang, G. Kehr, R. Fröhlich, G. Erker, J. Organomet. Chem. 2005, 690, 14-32. Dissertations: Strauch, Joachim: "Synthese von Katalysatorsystemen mit frühen und späten Über-gangsmetallen für diastereoselektive Polymerisation von polaren und un-polaren α-Olefinen" Niehues, Martin: "Übergangsmetallcarbenkomplexe mit 1,3-difunktionalisierten Imid-azol-2-ylidenen" Liptau, Patrick: "3Ferrocenophane als Liganden in der homogenen Katalyse" Hill, Michael: "Studien zu gerichteten C-H- und C-C-Aktivierungsreaktionen an Zirconocenesystemen" Göttke, Stephan: "Neue Metallkomplexe mit Steroidliganden für die asymmetrische Cyclopropanierung" Cornelißen, Carsten: "Heterobimetallische Komplexe mit Zirconocenliganden" Hannig, Frithjof: "Neue N-heterocyclische Carbenkomplexe auf der Basis von L-Histidin" Wang, Cun: "Synthesis of sp3-C1-Bridged Cp/Amido Titanium and Zirconium Complexes for Olefin Polymerization" Müller, Jens: "Oberflächennanostrukturen und Metallkomplexe von Aminosäure- und Peptidderivaten" Wasilke, Julia-Christina: "Chelating Zwitterionic and Pincer-type Transition Metal Catalysts for Olefin Coupling Reactions"