Chapter 84. Coupling Constants Through a Rapidly Dissociating-Recombining N [RIGHTWARDS ARROW]Si Dative Bond in Pentacoordinate Silicon Chelates

  1. Prof. Norbert Auner3 and
  2. Prof. Johann Weis4
  1. Inna Kalikhman1,
  2. Sonia Krivonos1,
  3. Daniel Kost1,
  4. Thomas Kottke2 and
  5. Dietmar Stalke2

Published Online: 28 APR 2008

DOI: 10.1002/9783527619917.ch84

Organosilicon Chemistry IV: From Molecules to Materials

Organosilicon Chemistry IV: From Molecules to Materials

How to Cite

Kalikhman, I., Krivonos, S., Kost, D., Kottke, T. and Stalke, D. (2000) Coupling Constants Through a Rapidly Dissociating-Recombining N [RIGHTWARDS ARROW]Si Dative Bond in Pentacoordinate Silicon Chelates, in Organosilicon Chemistry IV: From Molecules to Materials (eds N. Auner and J. Weis), Wiley-VCH Verlag GmbH, Weinheim, Germany. doi: 10.1002/9783527619917.ch84

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

    Department of Chemistry, Ben Gurion University of the Negev Beer-Sheva 84105, Israel, Tel.: Int. code + (7)646 1192 Fax: Int. code + (7)647 2943

  2. 2

    Institut für Anorganische Chemie der Universität Würzburg D-97074 Würzbuvg, Germany, Tel.: Int. code + (931)888 5246 Fax: Int. code + (931)888 4605

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:

  • pentacoordinate silicon;
  • multinuclear nmr;
  • stereodynamics

Summary

The preparation of new pentacoordinate silicon complexes 4–6 from polychloro- or fluoro-silanes and 0–silylated-NJ-dimethylhydrazides is described, along with a typical trigonal-bipyramidal (TBP) crystal structure. Evidence is presented that 4–6 undergo rapid N[RIGHTWARDS ARROW]Si dissociation-recombination. Coupling constants are reported extending across the dative bond, even at temperatures in which N-Si dissociation is rapid. A Karplus-type correlation between dihedral angles and vicinal coupling constants is shown.