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Artigo Revisado por pares
BIBTEX RIS

Synthesis and characterization of neutral and cationic diamino carbene complexes of gold(I)

1996; Elsevier BV; Volume: 511; Issue: 1-2 Linguagem: Inglês

10.1016/0022-328x(95)05957-q

ISSN

1872-8561

Autores

H.G. Raubenheimer, Louise Lindeque, S. Cronje,

Tópico(s)

N-Heterocyclic Carbenes in Organic and Inorganic Chemistry

Resumo

Bis(1-methylimidazolyl)aurate compounds were prepared by reacting 1-methylimidazol-2-yllithium and 1-methylbenzimidazol-2-yllithium with [AuCl(THT)] (THT = tetrahydrothiophene). Protonation or alkylation of the aurates yielded bis(carbene) complexes of the type [Au{CNR1CR2CR3N(Me)}2]+ (R1 = H or Me; R2 = H or R2R3 = C4H4). The reaction of 1-methylimidazol-2-yllithium with [AuCl(PPh3)] afforded the same bis(carbene) cation after protonation or alkylation. Mono(diamino)gold(I)carbene complexes resulted from the sequential reactions of 1-methylimidazol-2-yllithium with [Au(C6F5)(THT)] or AuCN and CF3SO3Me or CF3SO3H. Complicating side-reactions such as homoleptic rearrangement and protonation on carbon rather than nitrogen were observed.

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