Synthetic, structural and spectroscopic studies of (pseudo)halo(1,3-di-tert-butylimidazol-2-ylidine) gold complexes

被引：121

作者：

Baker, MV ^{[1
]}

Barnard, PJ ^{[1
]}

Brayshaw, SK ^{[1
]}

Hickey, JL ^{[1
]}

Skelton, BW ^{[1
]}

White, AH ^{[1
]}

机构：

[1] Univ Western Australia, Crawley, WA 6009, Australia

来源：

DALTON TRANSACTIONS | 2005年 / 01期

关键词：

D O I：

10.1039/b412540a

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A series of (pseudo) halo(1,3-di-tert-butylimidazol-2-ylidine) gold complexes [(But(2)Im) AuX] (X = Cl, Br, I, CN, N-3, NCO, SCN, SeCN, ONO2, OCOCH3, CH3) have been synthesized and characterised spectroscopically and structurally. C-13 NMR chemical shifts for the carbene carbon vary widely with differing ancillary anion, correlating well with the sigma-donor ability of the latter and with the M-C-(carbene) bond distance. These results reinforce the notion that N-heterocyclic carbene ligands are primarily sigma-donor ligands with little pi-acceptor ability.

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页码：37 / 43

页数：7

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