Hydrogen evolution catalysis by terminal molybdenum-oxo complexes.

ABSTRACT: Stable complexes with terminal triply bound metal-oxygen bonds are usually not considered as valuable catalysts for the hydrogen evolution reaction (HER). We now report the preparation of three conceptually different (oxo)molybdenum(V) corroles for testing if proton-assisted 2-electron reduction will lead to hyper-reactive molybdenum(III) capable of converting protons to hydrogen gas. The upto 670 mV differences in the [(oxo)Mo(IV)]^-/[(oxo)Mo(III)]^-2 redox potentials of the dissolved complexes came into effect by the catalytic onset potential for proton reduction thereby, significantly earlier than their reduction process in the absence of acids, but the two more promising complexes were not stable at practical conditions. Under heterogeneous conditions, the smallest

SUBMITTER: Yadav P 

PROVIDER: S-EPMC8367842 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature