Rhenium bipyridine catalysts with hydrogen bonding pendant amines for CO₂ reduction

Abstract

Rhenium tricarbonyl bipyridine complexes modified with pendant secondary and tertiary amines in the 6- and 6'-positions were synthesized and characterized. Electrocatalytic studies performed under CO₂ with 2,2,2-trifluoroethanol display large current densities, corresponding to the reduction of CO₂ to CO with moderate faradaic efficiencies (51-73%).