Nb-Dopant Changes the Regioselectivity of Proton-Coupled Electron Transfer in a Polyoxovanadate-Alkoxide.

ABSTRACT: The synthesis of a niobium-(V) substituted polyoxovanadate-alkoxide (NbPOV-alkoxide; [NbV₅O₇(OCH₃)₁₂]) is reported. Addition of 5,10-dihydrophenazine to [NbV₅O₇(OCH₃)₁₂] results in formation of the 2 H⁺/e^- reduced assembly, [NbV₅O₆(OH₂)-(OCH₃)₁₂], via proton-coupled electron transfer. [NbV₅O₆(OH₂)-(OCH₃)₁₂] has a bond dissociation free energy (BDFE-(O-H)_avg) of 62.3 kcal mol^-1, resembling that of its homometallic congener, [V₆O₆(OH₂)-(OCH₃)₁₂] (BDFE-(O-H)_avg = 62.3 kcal mol^-1)

SUBMITTER: Cooney SE 

PROVIDER: S-EPMC12308439 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature