3 years ago

Electrocatalytic Reduction of CO2 to Formate by an Iron Schiff Base Complex

Electrocatalytic Reduction of CO2 to Formate
by an Iron Schiff Base Complex
Sayanti Chatterjee, Michal Sabat, Asa W. Nichols, Charles W. Machan
An iron(III) chloride compound with a 6,6′-di(3,5-di-tert-butyl-2-hydroxybenzene)-2,2′-bipyridine ligand electrochemically mediates the 2e reductive disproportionation of two equivalents of CO2 to carbon monoxide and carbonate under aprotic conditions. With added phenol as a proton source, formate becomes the majority product (68 ± 4% Faradaic efficiency), with H2 as a minor product (30 ± 10%) and minimal CO (<1%). Cyclic voltammetry and infrared spectroelectrochemical studies suggest the release of CO from Fe carbonyl species is extremely slow, limiting activity.

Publisher URL: http://dx.doi.org/10.1021/acs.inorgchem.7b02955

DOI: 10.1021/acs.inorgchem.7b02955

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