η12-alkynyl-bridged W-Si complexes: Formation, structure, and reaction with acetone

Hiroyuki Sakaba, Mako Yoshida, Chizuko Kabuto, Kuninobu Kabuto

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Reactions of (η5-C5Me4R)(CO)2(MeCN)WMe (R = Me, Et) with HPh2SiC≡CtBu gave the novel alkynyl-bridged W-Si complexes, (η5-C5Me4R)(CO)2W(μ-η12-C≡CtBu)(SiPh2) (R = Me, Et), whose alkynyl ligands bridge the tungsten and silicon atoms in anη12-coordination mode. The structures of these complexes were fully characterized, including X-ray crystallography. Treatment of (η5-C5Me5)(CO)2W(μ-η12-C≡CtBu)(SiPh2) with acetone resulted in acetone insertion into the silicon-alkynyl linkage followed by intramolecular C-H activation of the tBu group to give the chelate-type alkyl-alkene complex,(η5-C5Me5R)(CO)212-CH2CMe2C=CHSiPh2OCMe2).

Original languageEnglish
Pages (from-to)7276-7277
Number of pages2
JournalJournal of the American Chemical Society
Volume127
Issue number20
DOIs
Publication statusPublished - 2005 May 25

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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