具有醇盐配体的热稳定氮杂环卡宾钾配合物，以及具有扭曲桥连卡宾的聚合物晶体结构。
Thermally stable potassium N-heterocyclic carbene complexes with alkoxide ligands, and a polymeric crystal structure with distorted, bridging carbenes.
作者信息
Arnold Polly L, Rodden Mark, Wilson Claire
机构信息
School of Chemistry, University of Nottingham, University Park, Nottingham, UK NG7 2RD.
出版信息
Chem Commun (Camb). 2005 Apr 7(13):1743-5. doi: 10.1039/b418302a. Epub 2005 Feb 3.
DOI:10.1039/b418302a
PMID:15791318
Abstract
Alkoxide-functionalized N-heterocyclic carbenes (NHCs) stabilise the potassium-imidazole-2-ylidene fragment against 1,2 alkyl rearrangement reactions; this allows the first structural characterisation of a potassium NHC complex, which reveals distorted and unusual bonding interactions between the imidazole ring and the potassium cation.
摘要
醇盐官能化的N-杂环卡宾（NHCs）可稳定钾-咪唑-2-亚基片段，防止其发生1,2-烷基重排反应；这使得首个钾-NHC配合物的结构得以表征，该表征揭示了咪唑环与钾阳离子之间扭曲且异常的键合相互作用。
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