Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 144, Issue 50, Pages 22826-22830Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.2c08315
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Funding
- Auburn University
- National Science Foundation
- [NSF-CHE-1662875]
- [NSF-CHE-1954336]
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A Co(II) complex with the polydentate quinol-containing ligand H2qp1 acts as an efficient electrocatalyst for oxygen reduction. It selectively produces H2O without any additional electron-proton transfer mediators, whereas a related complex that substitutes a phenol for the quinol instead produces mostly H2O2 under the same conditions.
A Co(II) complex with the polydentate quinol-containing ligand H2qp1 acts as an efficient electrocatalyst for oxygen reduction. Without any additional electron-proton transfer mediators, the electrocatalysis is selective for H2O; a related complex that substitutes a phenol for the quinol, conversely, instead produces mostly H2O2 under the same conditions. We propose that the ability of the redox-active quinol to donate two electrons impacts the product-determining step.
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