Chapter 76. Novel Silanols and Siloxanes Substituted with the Ferriomethyl Fragment CP(OC)2FeCH2

  1. Prof. Norbert Auner3 and
  2. Prof. Johann Weis4
  1. Wolfgang Malisch1,
  2. Marco Hofmann1 and
  3. Martin Nieger2

Published Online: 28 APR 2008

DOI: 10.1002/9783527619917.ch76

Organosilicon Chemistry IV: From Molecules to Materials

Organosilicon Chemistry IV: From Molecules to Materials

How to Cite

Malisch, W., Hofmann, M. and Nieger, M. (2000) Novel Silanols and Siloxanes Substituted with the Ferriomethyl Fragment CP(OC)2FeCH2, in Organosilicon Chemistry IV: From Molecules to Materials (eds N. Auner and J. Weis), Wiley-VCH Verlag GmbH, Weinheim, Germany. doi: 10.1002/9783527619917.ch76

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-Straße 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

SEARCH

Keywords:

  • femosilanols;
  • oxo functionalization;
  • ferriosiloxanes

Summary

Metalation of the chloromethylsilanes ClCH2SiMe3-nHn (n = 1–3) (2a-c) with the sodium ferrates Na[Fe(CO)2C5R5] (R = H, Me) (la, b) leads to the ferriomethyl-substituted silanes C5R5(OC)2Fe-CH2SiMe3-nHn (R = H, Me; n = 1–3) (3a-e). Oxo fimctionalization of 3a, c, d with dimethyldioxirane yields the ferriomethyl-silanols Cp(OC)2Fe-CH2SiMe3-n(OH)n (n = 1–3) (4a-c). 4a, b are in addition obtained via hydrolysis of the ferriomethylchlorosilanes Cp(OC)2Fe-CH2SiMe3-n, Cln (n = 1, 2) (5a, b) in the presence of Et3N. 4a, b are stable towards self-condensation below 0°C and can be isolated and structurally characterized. The existence of the silanetriol Cp(OC)2Fe-CH2Si(OH)3 (4c) could only be proved by subsequent condensation with the organochlorosilanes RMe2SiCl (R = H, Me) to give the tetrasiloxanes Cp(OC)2Fe-CH2Si(OSiMe2R)3 (6f, g). The analogous reaction of 4a, b leads to the di-and trisiloxanes Cp(OC)2Fe-CH2SiMe3-n(OSiMe2R)n (n = 1, 2) (6b-e).