Chapter 58. Synthesis and Functionalization of Branched Oligosilanes

  1. Prof. Norbert Auner2 and
  2. Prof. Johann Weis3
  1. S. Chtchian and
  2. C. Krempner

Published Online: 28 APR 2008

DOI: 10.1002/9783527619917.ch58

Organosilicon Chemistry IV: From Molecules to Materials

Organosilicon Chemistry IV: From Molecules to Materials

How to Cite

Chtchian, S. and Krempner, C. (2000) Synthesis and Functionalization of Branched Oligosilanes, in Organosilicon Chemistry IV: From Molecules to Materials (eds N. Auner and J. Weis), Wiley-VCH Verlag GmbH, Weinheim, Germany. doi: 10.1002/9783527619917.ch58

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. Fachbereich Chemie, Abteilung Anorganische Chemie Universität Rostock Buchbinderstr. 9, D-18051 Rostock, Germany Tel.: Int. code + (0381)498 1841—Fax: Int. code + (381)498 1763

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:

  • oligosilanes;
  • silyl anions;
  • bis(trimethylsilyl)methylsilyl derivatives

Summary

Bis(trimethylsilyl)methylsilyllithium (1) reacts with HSiCl3 and MeHSiCl2 to give 1, 1, 1, 2, 3, 4, 5, 5, 5-nonamethyl-2, 4-bis(trimethylsilyl)silane (2) and tris[bis-(tri-methylsilyl)methylsilyl]silane (3). Bromination of 2 and 3 with CHBr3 gives the bromosilanes 4 and 5. The reaction of 4 with Na-K alloy yields 1, 2-dimethyl-1, 1, 2, 2-tetrakis[bis(trimethylsilyl)methylsilyl]disilane (6), as a result of reductive coupling. Contrary to 4, bromosilane (5) reacts with Na-K alloy to give a solution of the silylpotassium compound (7). The treatment of 5 in THF with 15 % HCl leads to the formation of chlorotris[bis(trimethylsilyl)methylsilyl]silane (9). The molecular structures of 6 and 9 were established by single-crystal X-ray diffraction analyses.