The X-ray crystal structures of the mononuclear silyllithium species Li(THF)3SiPh3 and Li(THF)3Si(SiMe3)3

H. V.R. Dias, M. M. Olmstead, K. Ruhlandt-Senge, P. P. Power

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66 Scopus citations

Abstract

The organosilyllithium tetrahydrofuranate complexes Li(THF)3SiPh3 (1) and Li(THF)3Si(SiMe3)2 (2) were crystallized and structurally characterized by X-ray crystallography. Both compounds possess monomeric structures with relatively long (ca. 2.67 Å) LiSi bonds. In addition, the lithium-bound silicons have distorted tetrahedral geometries with low CSiC and SiSiSi angles of 101.3° (av.) (1) and 102.6° (av.) (2). Compound 1, which has not been reported as an isolated species, has been characterized by 1H, 7Li, 29Si NMR and IR spectroscopy. These studies indicate that the LiSi bond remains intact in THF solution at -80°C.

Original languageEnglish (US)
Pages (from-to)1-6
Number of pages6
JournalJournal of Organometallic Chemistry
Volume462
Issue number1-2
DOIs
StatePublished - Dec 14 1993
Externally publishedYes

ASJC Scopus subject areas

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

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