Homogeneous catalytic reduction of polyoxometalate by hydrogen gas with a hydrogenase model complex.

ABSTRACT: The homogeneous catalytic reduction of a polyoxometalate (POM) by hydrogen gas in aqueous media was investigated for the first time by using a [NiRu] hydrogenase model complex (I) under very mild conditions. By bubbling hydrogen gas into the buffer solution containing I and the Dawson-type POM (II_ox), the color of the solution turned from pale yellow to dark blue, suggesting the reduction of II_ox. The catalytic and kinetic studies revealed that I acted as an efficient catalyst to yield one-electron-reduced Dawson-type POM (II_red) with a low energy barrier for activating dihydrogen and reducing II_ox via a hydride complex of I. The process for the one-electron reduction of II_ox was confirmed by UV-vis spectroscopy, controlled pote

SUBMITTER: Minato T 

PROVIDER: S-EPMC9065399 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature