Coupling Constants Through a Rapidly Dissociating-Recombining N →Si Dative Bond in Pentacoordinate Silicon Chelates

Inna Kalikhman, Sonia Krivonos, Daniel Kost, Thomas Kottke, Dietmar Stalke

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

The preparation of new pentacoordinate silicon complexes 4-6 from polychloro-or fluoro-silanes and O-silylated-NJ-dimethylhydrazides is described, along with a typical trigonal-bipyramidal (TBP) crystal structure. Evidence is presented that 4-6 undergo rapid N→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.

Original languageEnglish
Title of host publicationOrganosilicon Chemistry Set
Subtitle of host publicationFrom Molecules to Materials
Publisherwiley
Pages494-499
Number of pages6
ISBN (Electronic)9783527620777
ISBN (Print)9783527323470
DOIs
StatePublished - 1 Jan 2005

Keywords

  • Multinuclear NMR
  • Pentacoordinate silicon
  • Stereodynamics

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