Electronic characterization of redox (non)-innocent Fe₂S₂ reference systems: a multi K-edge X-ray spectroscopic study.

ABSTRACT: Di-iron dithiolate hydrogenase model complexes are promising systems for electrocatalytic production of dihydrogen and have therefore been spectroscopically and theoretically investigated in this study. The direct effect of ligand substitution on the redox activity of the complex is examined. In order to understand and eventually optimize such systems, we characterised both metal and ligand in detail, using element specific X-ray absorption Fe- and S-K edge XAS. The (electronic) structure of three different [Fe₂S₂] hydrogenase systems in their non-reduced state was investigated. The effect of one- and two-electron reduction on the (electronic) structure was subsequently investigated. The S K-edge XAS spectra proved to be sensitive to delocalization of the electron den

SUBMITTER: Oudsen JPH 

PROVIDER: S-EPMC9048190 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature