Chapter 11. Different Reactivities of Divalent Silicon Compounds Towards Metallocene Derivatives of Molybdenum and Tungsten

  1. Prof. Norbert Auner2 and
  2. Prof. Johann Weis3
  1. Stefan H. A. Petri,
  2. Dirk Eikenberg and
  3. Peter Jutzi

Published Online: 28 APR 2008

DOI: 10.1002/9783527619917.ch11

Organosilicon Chemistry IV: From Molecules to Materials

Organosilicon Chemistry IV: From Molecules to Materials

How to Cite

Petri, S. H. A., Eikenberg, D. and Jutzi, P. (2000) Different Reactivities of Divalent Silicon Compounds Towards Metallocene Derivatives of Molybdenum and Tungsten, in Organosilicon Chemistry IV: From Molecules to Materials (eds N. Auner and J. Weis), Wiley-VCH Verlag GmbH, Weinheim, Germany. doi: 10.1002/9783527619917.ch11

Editor Information

  1. 2

    Inst. für Anorganische Chemie, der Universität Frankfurt, Marie-Curie-Strasse 11, D-60439 Frankfurt am Main, Germany, Phone: 0 69/7 98-29180, -29591, Fax: 069/798-29188

  2. 3

    Wacker-Chemie GmbH, Geschäftsbereich S, Werk Burghausen, Johannes-Hess-Strasse 24, D-84489 Burghausen, Germany

Author Information

  1. Fakultät für Chemie, Universität Bielefeld Universitätsstr. 25, D-33615 Bielefeld, Germany Tel.: Int. code + (521)106 6181—Fax.: Int, code + (521)106 6026

Publication History

  1. Published Online: 28 APR 2008
  2. Published Print: 17 JAN 2000

ISBN Information

Print ISBN: 9783527298549

Online ISBN: 9783527619917

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Keywords:

  • divalent silicon compounds;
  • molybdenum compounds;
  • silylene complex;
  • tungsten compounds;
  • X-ray crystal structures

Summary

The thermal and photochemical reactivity of divalent silicon species, decamethylsilicocene (Cp*2Si) and 1, 3-di-teri-butyl-1, 3, 2-diazasilol-2-ylidene (SiLN2), towards Cp2MH2 (M = Mo, W) and Cp2Mo(PEt3) is investigated. In the case of Cp*2Si no conversion of the silicon(II)-species is observed. This is attributed to the high steric demand of the bulky Cp* ligands. In SiLN2 the silicon atom is less shielded. So the reactivity of SiLN2 in analogous reactions is much higher. The reactions with Cp2MH2 lead via silylene insertion to the corresponding metallosilanes. The photolysis of an equimolar amount of SiLN2 and Cp2Mo(PEt3) results in the formation of the first molybdenum silylene complex with a tricoordinated silicon atom.