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, Karin Ruhlandt, P. P. Power

Research output: Contribution to journalArticle

66 Citations (Scopus)

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

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X ray crystallography
X Ray Crystallography
Silicon
Lithium
Nuclear magnetic resonance spectroscopy
crystallography
Infrared spectroscopy
Magnetic Resonance Spectroscopy
lithium
Crystal structure
X-Rays
X rays
nuclear magnetic resonance
crystal structure
Geometry
silicon
geometry
spectroscopy
x rays

ASJC Scopus subject areas

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

Cite this

The X-ray crystal structures of the mononuclear silyllithium species Li(THF)3SiPh3 and Li(THF)3Si(SiMe3)3. / Dias, H. V R; Olmstead, M. M.; Ruhlandt, Karin; Power, P. P.

In: Journal of Organometallic Chemistry, Vol. 462, No. 1-2, 14.12.1993, p. 1-6.

Research output: Contribution to journalArticle

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AU - Ruhlandt, Karin

AU - Power, P. P.

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AB - 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.

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