The influence of a S-to-S bridge in diiron dithiolate models on the oxidation reaction: a mimic of the H airox state of [FeFe]-hydrogenases†
Abstract
Two-electron oxidation of a diiron complex (1) containing a bulky S-to-S bridge with an exocyclic carbonyl group affords [1(OH)]+, which replicates the coordination structure and electronic configuration of Hairox, and the chemically reversible reaction between 1 and [1(OH)]+ mimics the bioprocess of interconversion of the inactive Hairox and the active Hred states of the [FeFe]-hydrogenases.