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Tris(triorganosilyl)methyl derivatives of potassium and lithium bearing dimethylamino or methoxy substituents at silicon. Crystal structures of KC(SiMe3)2(SiMe2NMe2), KC(SiMe2NMe2)3 and [LiC(SiMe3)(SiMe2OMe)2]2

Lookup NU author(s): Emeritus Professor Bill Clegg, Dr Keith Izod, Paul O'Shaughnessy

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Abstract

The compounds HC(SiMe3)(SiMe2X)2, X = NMe2 or OMe, have been synthesized in several steps from the phenyl derivative HC(SiMe3)(SiMe2Ph)2 and metallated to give organometallic compounds of the type MC(SiMe3)(SiMe2X)2, M = K or Li. The structures of the compounds KC(SiMe3)2(SiMe2NMe2) and KC(SiMe2NMe2)3 consist of infinite chains in which cations are co-ordinated to both nitrogen and carbon centres, whereas the lithium compound [LiC(SiMe3)(SiMe2OMe)2]2 crystallises in a lattice of dimeric cage molecules. Structural trends in the series MC(SiMe3)n(SiMe2X)3-n, n = 0-3, M = K or Li, X = NMe2 or OMe, are discussed.


Publication metadata

Author(s): Al-Juaid SS, Eaborn C, El-Hamruni S, Farook A, Hitchcock PB, Hopman M, Smith JD, Clegg W, Izod K, O'Shaughnessy P

Publication type: Article

Publication status: Published

Journal: Journal of the Chemical Society - Dalton Transactions

Year: 1999

Issue: 18

Pages: 3267-3273

Print publication date: 21/09/1999

ISSN (print): 1472-7773

ISSN (electronic): 1364-5447

Publisher: Royal Society of Chemistry

URL: http://dx.doi.org/10.1039/a904043i

DOI: 10.1039/a904043i


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