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

The NMR spectroscopy laboratory   The NMR spectroscopy laboratory is equipped with several supraconducting magnet systems working at 200, 300, 400, 500 and 600 MHz. The Bruker ARX300 works with a QNP-probe and sample changer. The Bruker AMX400, also working in sample changer mode, is optimized for the measurement of invers detected 2D-NMR-spectra. The high field of the Varian Unity plus 600 and its modern equipment, including invers detection, pulsed field z-gradients and pulseshaping, offers most of the advanced NMR-techniques. The recently purchased 500 MHz INOVA spectrometer from Varian is equipped to measure all kinds of X-nucleus experiments (invers and direct detection). A special probe with a 1H/19F inner and a double tuned 13C and 1H/19F outer coil enables us to study 1H/19F interactions in organic and metallorganic compounds. All measured NMR-data are provided on a central server. The group performs the NMR service for the different research groups of the institute, but is also engaged in the aid for solution of structural problems of other faculties inside the university. The group is prepared to organize NMR-training courses for graduate students. Publications: 2005: "N,N-Diisopropylaminomethyllithium: Synthesis, Oxidative Degradation, and Organoaluminum and -gallium Derivatives", X. Tian, M. Woski, C. Lustig; T. Pape, R. Fröhlich, D. LeVan; K. Bergander, N. Mitzel, Organometallics 2005; 24, 82-88. 2004: "Structural and Spectroscopic Evidence for Intramolecular Agostic M...H-C and Dative ZrF-C(ortho) Interactions in the Zwitterionic 4 Metal 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. 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. "Synthesis and Characterization of Enantiomerically Pure Menthylamines and Their Isocyanates" M.C. Schopohl, K. Bergander, O. Kataeva, R. Fröhlich, S. R. Waldvogel, Synthesis 2003, 17, 2689-2694. "The O-substitution Pattern of the MoCl5-Mediated Oxidative Aryl-Aryl Coupling Reaction", B. Kramer, R.  Fröhlich, K. Bergander, S.R. Waldvogel, Synthesis 2003, 1, 91-96. "Comparative enantioseparations with native beta-cyclodextrin, randomly acetylated beta-cyclodextrin and heptakis-(2,3-di-O-acetyl)-beta-cyclodextrin in capillary electrophoresis.", B. Chankvetadze, K. Lomsadze, N. Burjanadze, J. Breitkreutz, G. Pintore, M. Chessa, K. Bergander, G. Blaschke, Electrophoresis 2003, 24(6), 1083-1091.