Publication 811

Inorg. Chem., 55 (23), 12204-12210, 2016 DOI:10.1021/acs.inorgchem.6b01804
Characterization and subsequent reactivity of an Fe-peroxo porphyrin generated by electrochemical reductive activation of O2

Laboratoire d’Electrochimie Moléculaire, Université Paris Diderot, Université Sorbonne Paris Cité, UMR CNRS 7591, 75205 PARIS Cedex 13, France
Institut de Chimie Moléculaire et des Matériaux d’Orsay, Université Paris Sud, Université Paris Saclay, UMR CNRS 8182, 91405 Orsay Cedex, France

Reductive activation of O₂ is achieved by using the [Fe^III(F₂₀TPP)Cl] porphyrin through electrochemical reduction of the [Fe^III(F₂₀TPP)(O₂·^-)] superoxo complex. Formation of the [Fe^III(F₂₀TPP) (OO)]^- peroxo species is monitored by using low-temperature electronic absorption spectroscopy, electron paramagnetic resonance, and cyclic voltammetry. Its subsequent protonation to yield the [Fe^III(F₂₀TPP) (OOH)] hydroperoxo intermediate is probed using low-temperature electronic absorption spectroscopy and electron paramagnetic resonance.