Ligand Exchange Mechanism in Novel Hexacoordinate Silicon Complexes

Daniel Kost, Sonia Krivonos, Inna Kalikhman

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

Abstract

Novel neutral hexacoordinate silicon complexes 1-6 were prepared and the mechanism of ligand exchange studied. Two simultaneous nondissociative N-methyl exchange processes were found. On the basis of persistence of 1JSi-Fand 2JN-Si-H in 5 and 1a, respectively, dissociative exchange was ruled out. The two consecutive processes were assigned (in order of increasing activation energy) to (X, Cl)- and (O, O)-1,2-shifts, based on the low-temperature NOESY and Saturation Transfer spectrum. The first observation of 15N1H coupling across the Si-N coordinative bond is reported.

Original languageEnglish
Title of host publicationOrganosilicon Chemistry Set
Subtitle of host publicationFrom Molecules to Materials
Publisherwiley
Pages435-445
Number of pages11
ISBN (Electronic)9783527620777
ISBN (Print)9783527323470
DOIs
StatePublished - 1 Jan 2005

Keywords

  • Hexacoordinate Silicon
  • Multinuclear NMR
  • Stereodynamics

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