Chapter 75. 57Fe-Mössbauer Spectra and X-Ray Structures of Dipolar Ferrocenylhexasilanes

  1. Prof. Dr. Norbert Auner2 and
  2. Prof. Dr. Johann Weis3
  1. Harald Stüger,
  2. Hermann Rautz,
  3. Guido Kickelbick and
  4. Claus Pietzsch

Published Online: 5 MAY 2008

DOI: 10.1002/9783527619924.ch75

Organosilicon Chemistry V: From Molecules to Materials

Organosilicon Chemistry V: From Molecules to Materials

How to Cite

Stüger, H., Rautz, H., Kickelbick, G. and Pietzsch, C. (2003) 57Fe-Mössbauer Spectra and X-Ray Structures of Dipolar Ferrocenylhexasilanes, in Organosilicon Chemistry V: From Molecules to Materials (eds N. Auner and J. Weis), Wiley-VCH Verlag GmbH, Weinheim, Germany. doi: 10.1002/9783527619924.ch75

Editor Information

  1. 2

    Department of Inorganic Chemistry, University of Frankfurt, Marie-Curie-Straße 11, 60439 Frankfurt am Main, Germany

  2. 3

    Consortium of Electrochemical Industry GmbH, Zielstattstraße 20, 81379 Munich, Germany

Author Information

  1. Institut fur Anorganische Chemie, Technische Universitat Graz, Stremayrgasse 16, A-8010 Graz, Austria Tel: +43 316 873 8708 — Fax: +43 316 873 8701

Publication History

  1. Published Online: 5 MAY 2008
  2. Published Print: 26 SEP 2003

ISBN Information

Print ISBN: 9783527306701

Online ISBN: 9783527619924

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Keywords:

  • polysilanes;
  • ferrocene;
  • crystal structure;
  • Mössbauer spectroscopy

Summary

Linear and cyclic ferrocenylhexasilanes 1,6-Fc-Si6Me12-X [X = Me,-C6H4CH[DOUBLE BOND]C(CN)2], 1,3- and 1,4-Fc-Si6Me10-X [X = Me, -C6H4CH[DOUBLE BOND]C(CN)2], have been synthesized and their Mössbauer spectra have been measured. All compounds possess localized electronic structures on the Mossbauer timescale and partial FeIIIcharacter of the iron atom due to Cp[RIGHTWARDS ARROW](Sin) electron transfer. The Mossbauer data obtained, furthermore, indicate considerable aryl-ferrocenyl interaction via the hexasilane moiety. The single-crystal X-ray structures of 1,3- and 1,4-Fc-Si6Me10-C6H4CH[DOUBLE BOND]C(CN)2 exhibit the cyclohexasilane ring in chair conformation with the bulky Fc and aryl substituents in equatorial positions, while the open-chained analogue exhibits a perfect all-trans geometry.