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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >One-step formation of cyclometallated Au(III) N,S-heterocyclic carbene: crystallographic analysis
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One-step formation of cyclometallated Au(III) N,S-heterocyclic carbene: crystallographic analysis

机译:一步形成环金属化的Au(III)N,S-杂环卡宾的晶体学

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摘要

Gold(I) N,S-heterocyclic carbene AuBr(NSHC) (NSHC = N-allylbenzothiazolin-2-ylidene) (1) with an allyl pendant is oxidised by iodine to give [AuI2(NSHC)(2)](+)[I-3](-) (2) and a cyclometallated byproduct AuBr2(eta-C6H4SCNCH2CHCH2Br-C,C') (3). The latter can be prepared directly from bromination of 1. Similar reaction with the crotyl (but-2-en-1-yl) derivative AuBr(NSHC) (NSHC = N-crotyl-benzothiazolin-2- ylidene) (4) gives an oxidative addition product AuBr3(C6H4SCNCH2CH=CHCH3) (5). X-Ray single-crystal crystallographic analysis of 3 reveals a 5-membered cyclometallated ring in a sq planar metal that gives two types of Au-III-C bonds. Similar structural analysis has also been carried out in 1, 2 and 5.
机译:带有烯丙基侧基的金(I)N,S-杂环卡宾AuBr(NSHC)(NSHC = N-烯丙基苯并噻唑啉-2-亚基)(1)被碘氧化得到[AuI2(NSHC)(2)](+) [I-3](-)(2)和环金属化的副产物AuBr2(eta-C6H4SCNCH2CHCH2Br-C,C')(3)。后者可以直接由1的溴化制备。与巴豆基(丁-2-烯-1-基)衍生物AuBr(NSHC)的类似反应(NSHC = N-巴豆基-苯并噻唑啉-2-亚基)(4)氧化加成产物AuBr3(C6H4SCNCH2CH = CHCH3)(5)。 X射线单晶晶体学分析表明3在方形金属中具有5元环金属化环,该环给出了两种Au-III-C键。在1、2和5中也进行了类似的结构分析。

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