Chapter 64. Ferrocene as a Donor in Dipolar Oligosilane Structures

  1. Prof. Norbert Auner2 and
  2. Prof. Johann Weis3
  1. Christa Grogger,
  2. Harald Siegl,
  3. Hermann Rautz and
  4. Harald Stüger

Published Online: 28 APR 2008

DOI: 10.1002/9783527619917.ch64

Organosilicon Chemistry IV: From Molecules to Materials

Organosilicon Chemistry IV: From Molecules to Materials

How to Cite

Grogger, C., Siegl, H., Rautz, H. and Stüger, H. (2000) Ferrocene as a Donor in Dipolar Oligosilane Structures, in Organosilicon Chemistry IV: From Molecules to Materials (eds N. Auner and J. Weis), Wiley-VCH Verlag GmbH, Weinheim, Germany. doi: 10.1002/9783527619917.ch64

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, Technische Universität Graz Stremayrgasse 16, A-8010 Graz, Austria Tel.: Int. code + (316)873 8708— Fax.: Int. code + (316)873 8701

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:

  • ferrocenylsilanes;
  • UV spectroscopy;
  • cyclic voltammetry;
  • charge transfer

Summary

The highly dipolar α, ω-disubstituted permethyloligosilanes 1-ferrocenyl-2–(2, 2-dicyanoethenyl)phenyltetramethyldisilane (1) and l-ferrocenyl-2–(2, 2-dicyano-ethenyl)phenyldodecamethylhexasilane (2) were prepared in order to investigate intramolecular charge transfer phenomena. X-ray crystallography of 1 reveals the centrosymmetric point group P21/c and a gauche-type arrangement of the central C-Si-Six bonds with a dihedral angle of 70.32°. The three waves appearing in the cyclic voltammograms of 1 and 2 are easily assigned to reduction of the -CH[DOUBLE BOND]C(CN)2 acceptor and to oxidation of the ferrocenyl donor and the oligosilane spacer, respectively. UV/Vis absorption spectroscopy rules out any significant direct electron transfer from the donor to the acceptor group in 1 and 2.