Mesoionic Carbenes in Low- to High-Valent Vanadium Chemistry.

ABSTRACT: We report the synthesis of vanadium(V) oxo complex 1 with a pincer-type dianionic mesoionic carbene (MIC) ligand L¹ and the general formula [VOCl(L¹)]. A comparison of the structural (SC-XRD), electronic (UV-vis), and electrochemical (cyclic voltammetry) properties of 1 with the benzimidazolinylidene congener 2 (general formula [VOCl(L²)]) shows that the MIC is a stronger donor also for early transition metals with low d-electron population. Since electrochemical studies revealed both complexes to be reversibly reduced, the stronger donor character of MICs was not only demonstrated for the vanadium(V) but also for the vanadium(IV) oxidation state by isolating the reduced vanadium(IV) complexes [Co(Cp*)_2<

SUBMITTER: Neururer FR 

PROVIDER: S-EPMC8527456 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature