Synthesis and structure of a tungsten dichlorosilyl dihydride complex

Hiroyuki Sakaba, Takeshi Hirata, Chizuko Kabuto, Kuninobu Kabuto

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The reaction of the donor-stabilized silylene complex cis-Cp*(CO)2(H)W{double bond, long}SiHPh · THF (3, Cp* = η5-C5Me5) with LiAlH4 followed by the protonation of the resulting Li[Cp*(CO)2W(H)(SiH2Ph)] (4) with excess CF3COOH afforded the trihydride complex Cp*(CO)2WH3 (6). The structure of 6 was characterized using variable-temperature NMR studies and X-ray crystal analysis. Deprotonation of 6 with KH gave the anionic dihydride complex K[Cp*(CO)2WH2] (7), which was converted into the dichlorosilyl dihydride complex Cp*(CO)2W(H)2(SiHCl2) (8) on treatment with trichlorosilane. The X-ray crystal analysis of 8 revealed that it adopts a distorted pseudo-octahedral structure with a short W-Si bond, long Si-Cl bonds, and short contacts between the hydrides and silicon atom. Along with these structural features, the conformation of the silyl ligand around the W-Si bond may suggest the presence of a double interligand hypervalent interaction between the dichlorosilyl and hydrides ligands.

Original languageEnglish
Pages (from-to)402-407
Number of pages6
JournalJournal of Organometallic Chemistry
Volume692
Issue number1-3
DOIs
Publication statusPublished - 2007 Jan 1

Keywords

  • Hydrides
  • Interligand hypervalent interaction
  • Silicon
  • Tungsten
  • X-ray crystallography

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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