Molecular Siloxane Complexes of Rare Earth Metals—Model Systems for Silicate-Supported Catalysts?

Authors

  • Prof. Dr. Wolfgang A. Herrmann,

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    1. Anorganisch-chemisches Institut der Technischen Universität München, Lichtenbergstrasse 4, D-85747 Garching (FRG), Telefax: Int. code + (89)3209-3473
    • Anorganisch-chemisches Institut der Technischen Universität München, Lichtenbergstrasse 4, D-85747 Garching (FRG), Telefax: Int. code + (89)3209-3473
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  • Dr. Reiner Anwander,

    1. Anorganisch-chemisches Institut der Technischen Universität München, Lichtenbergstrasse 4, D-85747 Garching (FRG), Telefax: Int. code + (89)3209-3473
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  • Dr. Veronique Dufaud,

    1. Anorganisch-chemisches Institut der Technischen Universität München, Lichtenbergstrasse 4, D-85747 Garching (FRG), Telefax: Int. code + (89)3209-3473
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  • Wolfgang Scherer

    1. Anorganisch-chemisches Institut der Technischen Universität München, Lichtenbergstrasse 4, D-85747 Garching (FRG), Telefax: Int. code + (89)3209-3473
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  • Lanthanoid Complexes, Part 7. This work was supported by Osram GmbH and the Alexander-von-Humboldt-Stiftung. We thank Dipl.-Chem. F.-R. Klingan for recording the NMR spectra. – Part 6: W. A. Herrmann, R. Anwander, W. Scherer, F. C. Munck, J. Organomet. Chem.1993, 462, 163.

Abstract

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Participation of the oxygen atoms of the siloxane framework of ligand 1, and not only the terminal hydroxyl groups, may be required for the coordinative saturation of a metal center. This surprising conclusion was drawn from the X-ray structure analysis of the first rare earth metal complex with this type of ligand. Compound 1 serves as a molecular model for SiO2 supports for transition metal catalysts.

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