Unexpected Formation of NHC-Stabilized Hydrosilylyne Complexes via Alkane Elimination from NHC-Stabilized Hydrido(alkylsilylene) Complexes

Tetsuya Fukuda, Hisako Hashimoto, Hiromi Tobita

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

N-heterocyclic carbene (NHC)-stabilized hydrosilylyne complex Cp∗(CO)2WSiH(MeIMe)2 (3a) (MeIMe = 1,3,4,5-tetramethylimidazole-2-ylidene) was formed by the reaction of an NHC-stabilized silylene complex Cp∗(CO)2(H)WSiH(MeIMe){C(SiMe3)3} (2a) with 1 equiv of MeIMe at 70 °C. In this reaction, HC(SiMe3)3 was unexpectedly eliminated from 2a. A C5Me4Et analogue of 3a, (C5Me4Et)(CO)2WSiH(MeIMe)2 (3b), was also synthesized by the same method, and the structure of 3b was confirmed by X-ray crystallography. Although the silicon center of 3b is coordinated by two NHCs, the length of the W-Si bond of 3b [2.363(4) Å] is as short as that of the shortest W=Si double bond (∼2.36 Å). These complexes, 3a and 3b, are the first examples of a base-stabilized silylyne complex having only a hydrogen on the silicon atom.

Original languageEnglish
Pages (from-to)10906-10909
Number of pages4
JournalJournal of the American Chemical Society
Volume137
Issue number34
DOIs
Publication statusPublished - 2015 Sep 2

ASJC Scopus subject areas

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

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