Highly Electrophilic, Catalytically Active and Redox-Responsive Cobaltoceniumyl and Ferrocenyl Triazolylidene Coinage Metal Complexes.

ABSTRACT: A convenient access to a triad of triazoles with ferrocenyl and cobaltoceniumyl substituents is reported. N-Alkylation, deprotonation and metalation with Cu^I /Ag^I /Au^I synthons affords the heteroleptic triazolylidene complexes. Due to the combination of neutral, electron-donating ferrocenyl substituents and cationic, strongly electron-withdrawing cobaltocenium substituents, the mesoionic carbene (MIC) ligands of these complexes are electronically interesting "push-pull", "pull-push" and "pull-pull" metalloligands with further switchable redox states based on their fully reversible Fe^II /Fe^III , (ferrocene/ferrocenium) and Co^III /Co^II , (cobaltocenium/cobaltocene) redox couples. These are the first examples of meta

SUBMITTER: Vanicek S 

PROVIDER: S-EPMC6100101 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature