Synthesis by Si-H bond lithiation of novel half-pincer and pincer silyllithium compounds and their molecular structures

Eivgeni Mashin; Yosi Kratish; Alexander Kaushansky; Dmitry Bravo-Zhivotovskii; Yitzhak Apeloig

doi:10.1007/s11224-017-0910-6

Synthesis by Si-H bond lithiation of novel half-pincer and pincer silyllithium compounds and their molecular structures

Eivgeni Mashin, Yosi Kratish, Alexander Kaushansky, Dmitry Bravo-Zhivotovskii^*, Yitzhak Apeloig

^*Corresponding author for this work

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

5 Scopus citations

Abstract

The synthesis and the X-ray structural analysis of novel pincer and half-pincer silyllithiums: Ar₂ ^(N)(tBu₂MeSi)SiLi (Ar^(N) = o-dimethylbenzylamine) (2a), Ar₂ ^(N)(tBu)SiLi·Et₂O (2b), Me₂N(CH₂)₃(tBuMe₂Si)₂SiLi (4) and [Ar^(N)(tBuMe₂Si)₂SiLi]₄ (8) are presented. These silyllithiums were obtained by metalation of the corresponding silanes with tBuMe₂SiLi (for 2a, 2b, 4) and for 8 by consecutive reactions with tBuMe₂SiLi and tBu₂Hg. In the crystal the pincer silyllithiums 2a and 2b are monomeric. The half-pincer silyllithium 4 is dimeric, and 8 is tetrameric probably due to agostic interactions

Original language	English (US)
Pages (from-to)	537-544
Number of pages	8
Journal	Structural Chemistry
Volume	28
Issue number	2
DOIs	https://doi.org/10.1007/s11224-017-0910-6
State	Published - Apr 1 2017
Externally published	Yes

Keywords

H/Li exchange
Half-Pincer
Lithiation
Pincer
Si-H activation
Silyllithium
X-ray crystallography

ASJC Scopus subject areas

Condensed Matter Physics
Physical and Theoretical Chemistry

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title = "Synthesis by Si-H bond lithiation of novel half-pincer and pincer silyllithium compounds and their molecular structures",

abstract = "The synthesis and the X-ray structural analysis of novel pincer and half-pincer silyllithiums: Ar2 (N)(tBu2MeSi)SiLi (Ar(N) = o-dimethylbenzylamine) (2a), Ar2 (N)(tBu)SiLi·Et2O (2b), Me2N(CH2)3(tBuMe2Si)2SiLi (4) and [Ar(N)(tBuMe2Si)2SiLi]4 (8) are presented. These silyllithiums were obtained by metalation of the corresponding silanes with tBuMe2SiLi (for 2a, 2b, 4) and for 8 by consecutive reactions with tBuMe2SiLi and tBu2Hg. In the crystal the pincer silyllithiums 2a and 2b are monomeric. The half-pincer silyllithium 4 is dimeric, and 8 is tetrameric probably due to agostic interactions",

keywords = "H/Li exchange, Half-Pincer, Lithiation, Pincer, Si-H activation, Silyllithium, X-ray crystallography",

author = "Eivgeni Mashin and Yosi Kratish and Alexander Kaushansky and Dmitry Bravo-Zhivotovskii and Yitzhak Apeloig",

note = "Funding Information: This research was supported by the Israel Science Foundation and the Minerva Foundation in Munich. D.B.-Z. is grateful to the Ministry of Immigrant Absorption, State of Israel, for a Kamea fellowship. Publisher Copyright: {\textcopyright} 2017, Springer Science+Business Media New York.",

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doi = "10.1007/s11224-017-0910-6",

language = "English (US)",

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TY - JOUR

T1 - Synthesis by Si-H bond lithiation of novel half-pincer and pincer silyllithium compounds and their molecular structures

AU - Mashin, Eivgeni

AU - Kratish, Yosi

AU - Kaushansky, Alexander

AU - Bravo-Zhivotovskii, Dmitry

AU - Apeloig, Yitzhak

N1 - Funding Information: This research was supported by the Israel Science Foundation and the Minerva Foundation in Munich. D.B.-Z. is grateful to the Ministry of Immigrant Absorption, State of Israel, for a Kamea fellowship. Publisher Copyright: © 2017, Springer Science+Business Media New York.

PY - 2017/4/1

Y1 - 2017/4/1

N2 - The synthesis and the X-ray structural analysis of novel pincer and half-pincer silyllithiums: Ar2 (N)(tBu2MeSi)SiLi (Ar(N) = o-dimethylbenzylamine) (2a), Ar2 (N)(tBu)SiLi·Et2O (2b), Me2N(CH2)3(tBuMe2Si)2SiLi (4) and [Ar(N)(tBuMe2Si)2SiLi]4 (8) are presented. These silyllithiums were obtained by metalation of the corresponding silanes with tBuMe2SiLi (for 2a, 2b, 4) and for 8 by consecutive reactions with tBuMe2SiLi and tBu2Hg. In the crystal the pincer silyllithiums 2a and 2b are monomeric. The half-pincer silyllithium 4 is dimeric, and 8 is tetrameric probably due to agostic interactions

AB - The synthesis and the X-ray structural analysis of novel pincer and half-pincer silyllithiums: Ar2 (N)(tBu2MeSi)SiLi (Ar(N) = o-dimethylbenzylamine) (2a), Ar2 (N)(tBu)SiLi·Et2O (2b), Me2N(CH2)3(tBuMe2Si)2SiLi (4) and [Ar(N)(tBuMe2Si)2SiLi]4 (8) are presented. These silyllithiums were obtained by metalation of the corresponding silanes with tBuMe2SiLi (for 2a, 2b, 4) and for 8 by consecutive reactions with tBuMe2SiLi and tBu2Hg. In the crystal the pincer silyllithiums 2a and 2b are monomeric. The half-pincer silyllithium 4 is dimeric, and 8 is tetrameric probably due to agostic interactions

KW - H/Li exchange

KW - Half-Pincer

KW - Lithiation

KW - Pincer

KW - Si-H activation

KW - Silyllithium

KW - X-ray crystallography

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JO - Structural Chemistry

JF - Structural Chemistry

IS - 2

ER -

Synthesis by Si-H bond lithiation of novel half-pincer and pincer silyllithium compounds and their molecular structures

Abstract

Keywords

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