Syntheses and structures of lithium cyanocuprates containing the C(SiMe3)3, C(SiMe3)2(SiMe2NMe2) and C(SiMe3)(SiMe2OMe)2 groups

Colin Eaborn; Salima M. El-Hamruni; Michael S. Hill; Peter B. Hitchcock; J. David Smith

doi:10.1039/b206176g

Syntheses and structures of lithium cyanocuprates containing the C(SiMe₃)₃, C(SiMe₃)₂(SiMe₂NMe₂) and C(SiMe₃)(SiMe₂OMe)₂ groups

Colin Eaborn, Salima M. El-Hamruni, Michael S. Hill, Peter B. Hitchcock, J. David Smith

University of Sussex

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

14 Citations (SciVal)

Abstract

The 'lower order' lithium cyanocuprates [Li(thf)₂NCCu{C(SiMe₃)₃}]₂ (1d), [Li(thf)₂NCCu{C(SiMe₃)₂-(SiMe₂ NMe₂)}]₂ (1e) and [Li(thf)NCCu{C(SiMe₃)(SiMe₂OMe)₂}] ₂ (3) have been obtained from the reactions between copper(I) cyanide and the corresponding organolithium compounds. The compounds1d and1e have molecular structures containing four-membered Li₂N₂ rings but in 3 the lithium is coordinated by the methoxy groups of the ligand and almost linear LiNCCuC sequences are incorporated into fourteen-membered rings. Attempts to make 'higher order' cyanocuprates containing tri(organosilyl)methyl groups were unsuccessful and no reactions were observed when the cyanocuprate1d was treated with alkyl halides or enones.

Original language	English
Pages (from-to)	3975-3979
Number of pages	5
Journal	Journal of the Chemical Society, Dalton Transactions
Issue number	21
DOIs	https://doi.org/10.1039/b206176g
Publication status	Published - 1 Jan 2002

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General Chemistry

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title = "Syntheses and structures of lithium cyanocuprates containing the C(SiMe3)3, C(SiMe3)2(SiMe2NMe2) and C(SiMe3)(SiMe2OMe)2 groups",

abstract = "The 'lower order' lithium cyanocuprates [Li(thf)2NCCu{C(SiMe3)3}]2 (1d), [Li(thf)2NCCu{C(SiMe3)2-(SiMe2 NMe2)}]2 (1e) and [Li(thf)NCCu{C(SiMe3)(SiMe2OMe)2}] 2 (3) have been obtained from the reactions between copper(I) cyanide and the corresponding organolithium compounds. The compounds1d and1e have molecular structures containing four-membered Li2N2 rings but in 3 the lithium is coordinated by the methoxy groups of the ligand and almost linear LiNCCuC sequences are incorporated into fourteen-membered rings. Attempts to make 'higher order' cyanocuprates containing tri(organosilyl)methyl groups were unsuccessful and no reactions were observed when the cyanocuprate1d was treated with alkyl halides or enones.",

author = "Colin Eaborn and El-Hamruni, {Salima M.} and Hill, {Michael S.} and Hitchcock, {Peter B.} and Smith, {J. David}",

year = "2002",

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doi = "10.1039/b206176g",

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T1 - Syntheses and structures of lithium cyanocuprates containing the C(SiMe3)3, C(SiMe3)2(SiMe2NMe2) and C(SiMe3)(SiMe2OMe)2 groups

AU - Eaborn, Colin

AU - El-Hamruni, Salima M.

AU - Hill, Michael S.

AU - Hitchcock, Peter B.

AU - Smith, J. David

PY - 2002/1/1

Y1 - 2002/1/1

N2 - The 'lower order' lithium cyanocuprates [Li(thf)2NCCu{C(SiMe3)3}]2 (1d), [Li(thf)2NCCu{C(SiMe3)2-(SiMe2 NMe2)}]2 (1e) and [Li(thf)NCCu{C(SiMe3)(SiMe2OMe)2}] 2 (3) have been obtained from the reactions between copper(I) cyanide and the corresponding organolithium compounds. The compounds1d and1e have molecular structures containing four-membered Li2N2 rings but in 3 the lithium is coordinated by the methoxy groups of the ligand and almost linear LiNCCuC sequences are incorporated into fourteen-membered rings. Attempts to make 'higher order' cyanocuprates containing tri(organosilyl)methyl groups were unsuccessful and no reactions were observed when the cyanocuprate1d was treated with alkyl halides or enones.

AB - The 'lower order' lithium cyanocuprates [Li(thf)2NCCu{C(SiMe3)3}]2 (1d), [Li(thf)2NCCu{C(SiMe3)2-(SiMe2 NMe2)}]2 (1e) and [Li(thf)NCCu{C(SiMe3)(SiMe2OMe)2}] 2 (3) have been obtained from the reactions between copper(I) cyanide and the corresponding organolithium compounds. The compounds1d and1e have molecular structures containing four-membered Li2N2 rings but in 3 the lithium is coordinated by the methoxy groups of the ligand and almost linear LiNCCuC sequences are incorporated into fourteen-membered rings. Attempts to make 'higher order' cyanocuprates containing tri(organosilyl)methyl groups were unsuccessful and no reactions were observed when the cyanocuprate1d was treated with alkyl halides or enones.

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Syntheses and structures of lithium cyanocuprates containing the C(SiMe₃)₃, C(SiMe₃)₂(SiMe₂NMe₂) and C(SiMe₃)(SiMe₂OMe)₂ groups

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