Synthesis and structure of [Li2C(PPh2=NSiMe 3)(PPh2=S)]: A geminal dianionic ligand

Jun Hui Chen; Jiayi Guo; Yongxin Li; Cheuk Wai So

doi:10.1021/om900364j

Synthesis and structure of [Li₂C(PPh₂=NSiMe ₃)(PPh₂=S)]: A geminal dianionic ligand

Jun Hui Chen, Jiayi Guo, Yongxin Li, Cheuk Wai So^*

^*Corresponding author for this work

Nanyang Technological University

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

34 Citations (Scopus)

Abstract

The (iminophosphoranyl)(thiophosphoranyl)methane [CH₂(PPh ₂=NSiMe₃)(PPh₂=S)] (2) was obtained by the reaction of the phosphine-phosphinimine [Ph₂PCH₂(PPh ₂=NSiMe₃)] (1) with sulfur in toluene. Treatment of 2 with BuⁿLi in THF at -90°C afforded the lithium (iminophosphoranyl) (thiophosphoranyl)methanide [Li{CH(PPh₂=S)(PPh₂=NSiMe ₃)}] (3). The geminal dianion derivative [Li₂[C(PPh ₂=S)(PPh₂= NSiMe₃)}] (4) was synthesized by double deprotonation of 2 with a stoichiometric amount of Bu^tLi in Et₂O at -90°C. The structures of compounds 2-4 have been determined by X-ray crystallography.

Original language	English
Pages (from-to)	4617-4620
Number of pages	4
Journal	Organometallics
Volume	28
Issue number	15
DOIs	https://doi.org/10.1021/om900364j
Publication status	Published - Aug 10 2009
Externally published	Yes

ASJC Scopus Subject Areas

Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry

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@article{ceb0565946ee4c7dbc640a301b4fb2a4,

title = "Synthesis and structure of [Li2C(PPh2=NSiMe 3)(PPh2=S)]: A geminal dianionic ligand",

abstract = "The (iminophosphoranyl)(thiophosphoranyl)methane [CH2(PPh 2=NSiMe3)(PPh2=S)] (2) was obtained by the reaction of the phosphine-phosphinimine [Ph2PCH2(PPh 2=NSiMe3)] (1) with sulfur in toluene. Treatment of 2 with BunLi in THF at -90°C afforded the lithium (iminophosphoranyl) (thiophosphoranyl)methanide [Li{CH(PPh2=S)(PPh2=NSiMe 3)}] (3). The geminal dianion derivative [Li2[C(PPh 2=S)(PPh2= NSiMe3)}] (4) was synthesized by double deprotonation of 2 with a stoichiometric amount of ButLi in Et2O at -90°C. The structures of compounds 2-4 have been determined by X-ray crystallography.",

author = "Chen, {Jun Hui} and Jiayi Guo and Yongxin Li and So, {Cheuk Wai}",

year = "2009",

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doi = "10.1021/om900364j",

language = "English",

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journal = "Organometallics",

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T1 - Synthesis and structure of [Li2C(PPh2=NSiMe 3)(PPh2=S)]

T2 - A geminal dianionic ligand

AU - Chen, Jun Hui

AU - Guo, Jiayi

AU - Li, Yongxin

AU - So, Cheuk Wai

PY - 2009/8/10

Y1 - 2009/8/10

N2 - The (iminophosphoranyl)(thiophosphoranyl)methane [CH2(PPh 2=NSiMe3)(PPh2=S)] (2) was obtained by the reaction of the phosphine-phosphinimine [Ph2PCH2(PPh 2=NSiMe3)] (1) with sulfur in toluene. Treatment of 2 with BunLi in THF at -90°C afforded the lithium (iminophosphoranyl) (thiophosphoranyl)methanide [Li{CH(PPh2=S)(PPh2=NSiMe 3)}] (3). The geminal dianion derivative [Li2[C(PPh 2=S)(PPh2= NSiMe3)}] (4) was synthesized by double deprotonation of 2 with a stoichiometric amount of ButLi in Et2O at -90°C. The structures of compounds 2-4 have been determined by X-ray crystallography.

AB - The (iminophosphoranyl)(thiophosphoranyl)methane [CH2(PPh 2=NSiMe3)(PPh2=S)] (2) was obtained by the reaction of the phosphine-phosphinimine [Ph2PCH2(PPh 2=NSiMe3)] (1) with sulfur in toluene. Treatment of 2 with BunLi in THF at -90°C afforded the lithium (iminophosphoranyl) (thiophosphoranyl)methanide [Li{CH(PPh2=S)(PPh2=NSiMe 3)}] (3). The geminal dianion derivative [Li2[C(PPh 2=S)(PPh2= NSiMe3)}] (4) was synthesized by double deprotonation of 2 with a stoichiometric amount of ButLi in Et2O at -90°C. The structures of compounds 2-4 have been determined by X-ray crystallography.

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Synthesis and structure of [Li₂C(PPh₂=NSiMe ₃)(PPh₂=S)]: A geminal dianionic ligand

Abstract

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