β-Oxochlorin cobalt(ii) complexes catalyze the electrochemical reduction of CO2

Abstract

Inspired by the architecture of the macrocycle of heme d₁, a series of synthetic mono-, di- and tri-β-oxo-substituted porphyrinoid cobalt(II) complexes were evaluated as electrocatalytic CO₂ reducers, identifying complexes of unusually high efficiencies in generating multi-electron reduction products, including CH₄.