Vanadium Substitution Dictates H Atom Uptake at Lindqvist-type Polyoxotungstates.

ABSTRACT: Understanding how modification of molecular structures changes the thermochemistry of H atom uptake can provide design criteria for the formation of highly active catalysts for reductive transformations. Herein, we describe the effect of doping an atomically precise polyoxotungstate with vanadium on proton-coupled electron transfer (PCET) reactivity. The Lindqvist-type polyoxotungstate [W₆O₁₉]^2- displays reversible redox chemistry, which was found to be unchanged in the presence of acid, indicating an inability to couple reduction with protonation. However, the incorporation of a single vanadium center into the structure significantly changes the reactivity, and the potential required for one-electron reduction of [VW₅O₁₉]^3-

SUBMITTER: Shiels D 

PROVIDER: S-EPMC11632773 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature