Direct Observation of a Hydrogen-Bonding Assisted Quasi-Reversible Superoxo/Peroxo Interconversion in a Heme Model.
The activation and reduction of molecular oxygen at transition metal centers are central to both enzymatic catalysis and energy conversion. Here, we report the first direct observation of a hydrogen-bonding-assisted, quasi-reversible superoxo (FeIII─O2˙-)/peroxo (FeIII─O2 2-) redox couple in a heme model complex using...