Chapter 74. Metal-Fragment Substituted Disilanols

  1. Prof. Norbert Auner3 and
  2. Prof. Johann Weis4
  1. Wolfgang Malisch1,
  2. Heinrich Jehle1,
  3. Markku Lager1 and
  4. Martin Nieger2

Published Online: 28 APR 2008

DOI: 10.1002/9783527619917.ch74

Organosilicon Chemistry IV: From Molecules to Materials

Organosilicon Chemistry IV: From Molecules to Materials

How to Cite

Malisch, W., Jehle, H., Lager, M. and Nieger, M. (2000) Metal-Fragment Substituted Disilanols, in Organosilicon Chemistry IV: From Molecules to Materials (eds N. Auner and J. Weis), Wiley-VCH Verlag GmbH, Weinheim, Germany. doi: 10.1002/9783527619917.ch74

Editor Information

  1. 3

    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. 4

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

Author Information

  1. 1

    Institut für Anorganische Chemie der Universität Würzburg Am Hubland, D-97074 Würzburg, Germany Tel.: Int. Code + (931)888 5277 — Fax: Int. Code + (931)888 4618

  2. 2

    Institut für Anorganische Chemie der Universität Bonn Gerhard-Domagk-Str. 1, D-53121 Bonn, Germany

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:

  • transition metal effect;
  • metallodisilanes;
  • hydrolysis;
  • metallodisilanols;
  • metallosiloxanes

Summary

The metallodisilanes C5R5(OC)2Fe-Si2Cl5 (2a, b) and C5R5(OC)2Fe-Si2H5 (3a, b) (R = H, Me) used for the synthesis of metallodisilanols have been structurally characterized. Hydroxylation of Cp(OC)2Fe-Si2Me4Cl (4) has been realized with water in the presence of Et3N to yield the corresponding ferriodisilanol Cp(OC)2Fe-Si2Me4OH (5). Formation of the metallodichlorotrihydroxydisilanes C5R5(OC)2M-SiCl2-Si(OH)3 [R = H, M = Fe (7a); R = Me, M = Ru (7b)] is achieved by regioselective hydrolysis of the metallopentachlorodisilanes 2a and C5Me5(OC)2Ru-Si2Cl5 (2c). In an analogous manner [Cp(OC)2Fe-SiC12]2 (11) is converted to [Cp(OC)2Fe-Si(OH)2]2 (12). Controlled base-assisted condensation of 5, 7b and 12 leads to the formation of the novel metallodisilanesiloxanes CP(OC)2Fe-Si2Me4OSiMe2H (6), Cp*(OC)2RU-SiCl2Si(OSiMe2H)3 (8) and [Cp(OC)2Fe-Si(OSiMe2H)2]2 (13). Specific introduction of hydroxyl groups at the α-silicon of metallodisilanes is realized by conversion of the ferriodisilanes C5R5(OC)2Fe-Si2H5 (3a, b) into the ferriodichlorodisilanes C5R5(OC)2Fe-SiCl2SiH3 (9a, b) with CCl4 followed by hydrolysis to give Cp(OC)2Fe-Si(OH)2-SiH3 (10).