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- Title
Activating a Low Overpotential CO<sub>2</sub> Reduction Mechanism by a Strategic Ligand Modification on a Ruthenium Polypyridyl Catalyst.
- Authors
Johnson, Ben A.; Maji, Somnath; Agarwala, Hemlata; White, Travis A.; Mijangos, Edgar; Ott, Sascha
- Abstract
The introduction of a simple methyl substituent on the bipyridine ligand of [Ru( tBu3tpy)(bpy)(NCCH3)]2+ ( tBu3tpy=4,4′,4′′-tri- tert-butyl-2,2′:6′,2′′-terpyridine; bpy=2,2′-bipyridine) gives rise to a highly active electrocatalyst for the reduction of CO2 to CO. The methyl group enables CO2 binding already at the one-electron reduced state of the complex to enter a previously not accessible catalytic cycle that operates at the potential of the first reduction. The complex turns over with a Faradaic efficiency close to unity and at an overpotential that is amongst the lowest ever reported for homogenous CO2 reduction catalysts.
- Subjects
CARBON dioxide reduction; RUTHENIUM catalysts; POLYPYRIDINES; REACTION mechanisms (Chemistry); LIGANDS (Chemistry); ELECTROCATALYSIS
- Publication
Angewandte Chemie, 2016, Vol 128, Issue 5, p1857
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201508490