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

doi:10.1016/0022-328X(93)83334-R

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

Research output: Contribution to journal › Article › peer-review

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 language	English (US)
Pages (from-to)	1-6
Number of pages	6
Journal	Journal of Organometallic Chemistry
Volume	462
Issue number	1-2
DOIs	https://doi.org/10.1016/0022-328X(93)83334-R
State	Published - Dec 14 1993
Externally published	Yes

ASJC Scopus subject areas

Biochemistry
Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry
Materials Chemistry

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

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 {\AA}) 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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T1 - The X-ray crystal structures of the mononuclear silyllithium species Li(THF)3SiPh3 and Li(THF)3Si(SiMe3)3

AU - Dias, H. V.R.

AU - Olmstead, M. M.

AU - Ruhlandt-Senge, K.

AU - Power, P. P.

PY - 1993/12/14

Y1 - 1993/12/14

N2 - 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.

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

Abstract

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