Chapter 41. Silylhydrazines: Lithium Derivatives, Oxidation and Condensation Reactions

  1. Prof. Norbert Auner2 and
  2. Prof. Johann Weis3
  1. Eike Gellermann,
  2. Uwe Klingebiel and
  3. Henning Witte-Abel

Published Online: 28 APR 2008

DOI: 10.1002/9783527619917.ch41

Organosilicon Chemistry IV: From Molecules to Materials

Organosilicon Chemistry IV: From Molecules to Materials

How to Cite

Gellermann, E., Klingebiel, U. and Witte-Abel, H. (2000) Silylhydrazines: Lithium Derivatives, Oxidation and Condensation Reactions, in Organosilicon Chemistry IV: From Molecules to Materials (eds N. Auner and J. Weis), Wiley-VCH Verlag GmbH, Weinheim, Germany. doi: 10.1002/9783527619917.ch41

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. Institut für Anorganische Chemie Georg-August- Universität Göttingen Tammannstr. 4, D-37077 Göttingen, Germany Tel.: Int. Code + (551)39 3052 —Fax: Int. Code + (551)39 3373

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:

  • silylhydrazines;
  • lithium-derivatives;
  • silylhydrazones;
  • crystal structures

Summary

Condensation of stable mono(silyl)hydrazines leads to the formation of bis(silyl)hydrazines above 200°C. The degree of oligomerization of mono- and dilithiated silylhydrazines depends on the bulkiness of the substituents. Lithiated silylhydrazines react with fluorosilanes forming, for example, tris- and tetrakis(silyl)hydrazines, and six-membered rings. In oxidation reactions of bulky bis(silyl)hydrazines bis(silyl)diazenes are obtained. Lithiumderivatives of fluoro functional bis(silyl)hydrazones are precursors for 1, 2-diaza-3-sila-5-cyclopentenes. Further lithiation with tBuLi leads to tricyclic compounds and LiF.