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Updated: Mar 15, 2026

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
Mn-NHC Electrocatalysts: Increasing π Acidity Lowers the Reduction Potential and Increases the Turnover Frequency for
Charles J Stanton1, Jonathon E Vandezande1, George F Majetich1
1Department of Chemistry and ‡Center for Computational Quantum Chemistry, University of Georgia , Athens, Georgia 30602, United States.
Abstract:
A new manganese(I) N-heterocyclic carbene electrocatalyst containing a benzimidazole-pyrimidine-based ligand is reported for the two-electron conversion of CO2. The increased π acidity of pyrimidine shifts the two-electron reduction to -1.77 V vs Fc/Fc+, 70 mV more positive than that for MnBr(2,2'-bipyridine)(CO)3; increased catalytic current enhancement is also observed (5.2× vs 2.1×). Theoretical analyses suggest that this heightened activity may follow from the preference for a reduction-first dehydroxylation mechanism.
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