Synthesis of bisgermavinylidene and its reaction with chalcogens

Wing Por Leung; Cheuk Wai So; Zhong Xia Wang; Jin Zhi Wang; Thomas C.W. Mak

doi:10.1021/om034071t

Synthesis of bisgermavinylidene and its reaction with chalcogens

Wing Por Leung^*, Cheuk Wai So, Zhong Xia Wang, Jin Zhi Wang, Thomas C.W. Mak

^*Corresponding author for this work

Chinese University of Hong Kong

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

43 Citations (Scopus)

Abstract

The lithium complex [HC(PPh₂=NSiMe₃)₂Li(THF)] (2) prepared by the reaction of BuⁿLi with bis(iminophosphorano)methane reacts with GeCl₂·dioxane in different stoichiometric ratios to afford [HC(PPh₂=NSiMe₃)₂GeCl] (3) and [(Me₃SiN=PPh₂)₂C=Ge→Ge=C (PPh₂=NSiMe₃)₂] (4), respectively. Bisgermavinylidene 4 can also be obtained by the reaction of 3 with [Ge{N(SiMe₃)₂}₂] or 2. Further reaction of 4 with Me₃NO afforded [(μ-N=Ph₂P)(Me₃-SiN=Ph₂P) C=Ge(OSiMe₃)]₂ (5), and direct reaction of elemental chalcogens (sulfur, selenium, and tellurium) with 4 afforded [(Me₃SiN=PPh₂)₂C=Ge(μ-E)]₂ [E = S (6), Se (7), and Te (8)]. X-ray structures of compounds 2-8 have been determined.

Original language	English
Pages (from-to)	4305-4311
Number of pages	7
Journal	Organometallics
Volume	22
Issue number	21
DOIs	https://doi.org/10.1021/om034071t
Publication status	Published - Oct 13 2003
Externally published	Yes

ASJC Scopus Subject Areas

Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry

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title = "Synthesis of bisgermavinylidene and its reaction with chalcogens",

abstract = "The lithium complex [HC(PPh2=NSiMe3)2Li(THF)] (2) prepared by the reaction of BunLi with bis(iminophosphorano)methane reacts with GeCl2·dioxane in different stoichiometric ratios to afford [HC(PPh2=NSiMe3)2GeCl] (3) and [(Me3SiN=PPh2)2C=Ge→Ge=C (PPh2=NSiMe3)2] (4), respectively. Bisgermavinylidene 4 can also be obtained by the reaction of 3 with [Ge{N(SiMe3)2}2] or 2. Further reaction of 4 with Me3NO afforded [(μ-N=Ph2P)(Me3-SiN=Ph2P) C=Ge(OSiMe3)]2 (5), and direct reaction of elemental chalcogens (sulfur, selenium, and tellurium) with 4 afforded [(Me3SiN=PPh2)2C=Ge(μ-E)]2 [E = S (6), Se (7), and Te (8)]. X-ray structures of compounds 2-8 have been determined.",

author = "Leung, {Wing Por} and So, {Cheuk Wai} and Wang, {Zhong Xia} and Wang, {Jin Zhi} and Mak, {Thomas C.W.}",

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doi = "10.1021/om034071t",

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AU - Leung, Wing Por

AU - So, Cheuk Wai

AU - Wang, Zhong Xia

AU - Wang, Jin Zhi

AU - Mak, Thomas C.W.

PY - 2003/10/13

Y1 - 2003/10/13

N2 - The lithium complex [HC(PPh2=NSiMe3)2Li(THF)] (2) prepared by the reaction of BunLi with bis(iminophosphorano)methane reacts with GeCl2·dioxane in different stoichiometric ratios to afford [HC(PPh2=NSiMe3)2GeCl] (3) and [(Me3SiN=PPh2)2C=Ge→Ge=C (PPh2=NSiMe3)2] (4), respectively. Bisgermavinylidene 4 can also be obtained by the reaction of 3 with [Ge{N(SiMe3)2}2] or 2. Further reaction of 4 with Me3NO afforded [(μ-N=Ph2P)(Me3-SiN=Ph2P) C=Ge(OSiMe3)]2 (5), and direct reaction of elemental chalcogens (sulfur, selenium, and tellurium) with 4 afforded [(Me3SiN=PPh2)2C=Ge(μ-E)]2 [E = S (6), Se (7), and Te (8)]. X-ray structures of compounds 2-8 have been determined.

AB - The lithium complex [HC(PPh2=NSiMe3)2Li(THF)] (2) prepared by the reaction of BunLi with bis(iminophosphorano)methane reacts with GeCl2·dioxane in different stoichiometric ratios to afford [HC(PPh2=NSiMe3)2GeCl] (3) and [(Me3SiN=PPh2)2C=Ge→Ge=C (PPh2=NSiMe3)2] (4), respectively. Bisgermavinylidene 4 can also be obtained by the reaction of 3 with [Ge{N(SiMe3)2}2] or 2. Further reaction of 4 with Me3NO afforded [(μ-N=Ph2P)(Me3-SiN=Ph2P) C=Ge(OSiMe3)]2 (5), and direct reaction of elemental chalcogens (sulfur, selenium, and tellurium) with 4 afforded [(Me3SiN=PPh2)2C=Ge(μ-E)]2 [E = S (6), Se (7), and Te (8)]. X-ray structures of compounds 2-8 have been determined.

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Synthesis of bisgermavinylidene and its reaction with chalcogens

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