Journal
DALTON TRANSACTIONS
Volume 48, Issue 4, Pages 1226-1236Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8dt03358g
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Funding
- National Science Foundation [CHE-1800400]
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-SC0019370]
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Manganese(i) tricarbonyl complexes such as [Mn(bpy)(CO)(3)L] (L = Br, or CN) are known to be electrocatalysts for CO2 reduction to CO. However, due to their rapid photodegradation under UV and visible light, these monomeric manganese complexes have not been considered as photocatalysts for CO2 reduction without the use of a photosensitizer. In this paper, we report a cyanide-bridged di-manganese complex, {[Mn(bpy)(CO)(3)](2)(-CN)}ClO4, which is both electrocatalytic and photochemically active for CO2 reduction to CO. Compared to the [Mn(bpy)(CO)(3)CN] electrocatalyst, our CN-bridged binuclear complex is a more efficient electrocatalyst for CO2 reduction using H2O as a proton source. In addition, we report a photochemical CO2 reduction to CO using the dimanganese complex under 395 nm irradiation.
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