Synthesis of AuI- and AuIII-Bis(NHC) Complexes: Ligand Influence on Oxidative Addition to AuI Species

被引：34
|
作者：
Collado, Alba [1 ]
Bohnenberger, Jan [1 ]
Oliva-Madrid, Maria-Jose [1 ]
Nun, Pierrick [1 ]
Cordes, David B. [1 ]
Slawin, Alexandra M. Z. [1 ]
Nolan, Steven P. [2 ,3 ]
机构：
[1] Univ St Andrews, Sch Chem, EaStCHEM, Purdie Bldg, St Andrews KY16 9ST, Fife, Scotland
[2] Univ Ghent, Dept Inorgan & Phys Chem, Krijgslaan 281-S3, B-9000 Ghent, Belgium
[3] King Saud Univ, Coll Sci, Dept Chem, POB 2455, Riyadh 11451, Saudi Arabia
来源：
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY | 2016年 / 25期
基金：
欧洲研究理事会;
关键词：
Gold; Carbene ligands; Nitrogen heterocycles; Oxidation; Hypervalent iodine; N-HETEROCYCLIC CARBENE; REDUCTIVE ELIMINATION; GOLD(III) COMPLEXES; GOLD COMPLEXES; METAL-COMPLEXES; AU(I); NHC; REACTIVITY; BEARING; CATALYSIS;
D O I：
10.1002/ejic.201600791
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The oxidation chemistry of a range of Au-I-bis(NHC) (NHC = N-heterocyclic carbene) complexes with hypervalent iodine(III) oxidants has been explored. Au-I-bis(NHC) precursors have been synthesised by treatment of the corresponding [Au(NHC) Cl] derivatives with imidazol(idin) ium salts in the presence of K2CO3. The reactivity of the Au-I complexes towards PhICl2 has revealed an influence of the nature of the NHC ligands present in the complex on the outcome of the oxidation reaction: small and more strongly electron-donating NHC ligands favoured the formation of a Au-III species. On the basis of these results, a AuI complex bearing two 1-butyl-3-methylimidazol-2-ylidene (BMIM) ligands has been synthesised. This complex reacted with PhICl2 and also - for the first time in Au-NHC systems - with PhI(OAc)(2) and PhI(OAcF)(2) (OAcF = trifluoroacetate), affording stable Au-III-(NHC)(2) complexes bearing acetate ligands.
引用
收藏
页码：4111 / 4122
页数：12
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