Electrocatalytic CO₂ Reduction with a Binuclear Bis-Terpyridine Pyrazole-Bridged Cobalt Complex.

ABSTRACT: A pyrazole-based ligand substituted with terpyridine groups at the 3 and 5 positions has been synthesized to form the dinuclear cobalt complex 1, that electrocatalytically reduces carbon dioxide (CO₂ ) to carbon monoxide (CO) in the presence of Brønsted acids in DMF. Chemical, electrochemical and UV-vis spectro-electrochemical studies under inert atmosphere indicate pairwise reduction processes of complex 1. Infrared spectro-electrochemical studies under CO₂ and CO atmosphere are consistent with a reduced CO-containing dicobalt complex which results from the electroreduction of CO₂ . In the presence of trifluoroethanol (TFE), electrocatalytic studies revealed single-site mechanism with up to 94 % selectivity towards CO formation when 1.47 M TFE were present

SUBMITTER: Bohn A 

PROVIDER: S-EPMC10107111 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature