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

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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 languageEnglish
Pages (from-to)3975-3979
Number of pages5
JournalJournal of the Chemical Society, Dalton Transactions
Issue number21
DOIs
Publication statusPublished - 1 Jan 2002

ASJC Scopus subject areas

  • Chemistry(all)

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