作者:Nathalie Ségaud、Chloë Johnson、Albert Farre、Martin Albrecht
DOI:10.1039/d1cc02740a
日期:——
The metal–carbon bond in N-heterocyclic carbene (NHC) metal complexes, which are ubiquitous in modern homogeneous catalysis, is often conjectured to be robust. Here, carbene dissociation was evaluated from a series of complexes with metals of relevance in catalysis containing either an Arduengo-type 2-imidazolylidene or a mesoionic 1,2,3-triazolylidene ligand through thione formation, revealing remarkable
N-杂环卡宾 (NHC) 金属配合物中的金属-碳键在现代均相催化中无处不在,通常被认为是稳健的。在这里,通过硫酮的形成,从一系列与催化相关金属的配合物中评估了卡宾的离解,其中包含 Arduengo 型 2-咪唑亚基或介离子 1,2,3-三唑亚基配体,揭示了 NHC-金属的显着动力学不稳定性键为,例如铱III,铑III和Ni II络合物。