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Exploring the stability of the NHC-metal bond using thiones as probes.

ABSTRACT: 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 kinetic lability of the NHC-metal bond for, e.g. Ir^III, Rh^III, and Ni^II complexes.

SUBMITTER: Segaud N

PROVIDER: S-EPMC8506647 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature

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Exploring the stability of the NHC-metal bond using thiones as probes.

Ségaud Nathalie N Johnson Chloë C Farre Albert A Albrecht Martin M

Chemical communications (Cambridge, England) 20211012 81

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 kinetic lability of the NHC-metal bond for, e.g. IrIII, RhIII, ...[more]

PMID: 34569555

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