Journal
CHEMICAL COMMUNICATIONS
Volume 48, Issue 90, Pages 11100-11102Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2cc35576k
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Funding
- Center for Molecular Electrocatalysis, an Energy Frontier Research Center
- US Department of Energy, Office of Science
- Laboratory Directed Research and Development program at Pacific Northwest National Laboratory
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Fe(III)-meso-tetra(pyridyl) porphyrins are electrocatalysts for the reduction of dioxygen in aqueous acidic solution. The 2-pyridyl derivatives, both the triflate and chloride salts, are more selective for the desired 4e(-) reduction than the isomeric 4-pyridyl complexes. The inward-pointing pyridinium groups influence proton delivery despite their distance from the iron centre.
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