Issue 21, 2002
From the journal:

Journal of the Chemical Society, Dalton Transactions

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

Colin Eaborn,*a   Salima M. El-Hamruni,b   Michael S. Hill,a   Peter B. Hitchcocka  and  J. David Smith*a  

* Corresponding authors

a School of Chemistry, Physics and Environmental Science, University of Sussex, Brighton, UK
E-mail: C.Eaborn@sussex.ac.uk, J.D.Smith@sussex.ac.uk

b Department of Chemistry, Faculty of Science, Al-Fatih University, P O Box 13203, Tripoli, Libya

Abstract

The ‘lower order’ lithium cyanocuprates [Li(thf)2NCCu{C(SiMe3)3}]2 (1d), [Li(thf)2NCCu{C(SiMe3)2(SiMe2NMe2)}]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 compounds 1d and 1e 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 cyanocuprate 1d was treated with alkyl halides or enones.

Graphical abstract: 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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Article information

DOI
https://doi.org/10.1039/B206176G
Article type
Paper
Submitted
27 Jun 2002
Accepted
15 Aug 2002
First published
02 Oct 2002

J. Chem. Soc., Dalton Trans., 2002, 3975-3979

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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

C. Eaborn, S. M. El-Hamruni, M. S. Hill, P. B. Hitchcock and J. David Smith, J. Chem. Soc., Dalton Trans., 2002, 3975 DOI: 10.1039/B206176G

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