Catalytic Oxygen Evolution from Manganese Complexes with an Oxidation-Resistant N,N,O-Donor Ligand

Thoe K Michaelos; Hannah M C Lant; Liam S Sharninghausen; Stephanie M Craig; Fabian S Menges; Brandon Q Mercado; Gary W Brudvig; Robert H Crabtree

doi:10.1002/cplu.201600353

Catalytic Oxygen Evolution from Manganese Complexes with an Oxidation-Resistant N,N,O-Donor Ligand

Chempluschem. 2016 Oct;81(10):1129-1132. doi: 10.1002/cplu.201600353.

Authors

Thoe K Michaelos¹, Hannah M C Lant¹, Liam S Sharninghausen¹, Stephanie M Craig¹, Fabian S Menges¹, Brandon Q Mercado¹, Gary W Brudvig¹, Robert H Crabtree¹

Affiliation

¹ Department of Chemistry, Yale University, 225 Prospect Street, New Haven, CT, 06511, USA.

PMID: 31964076
DOI: 10.1002/cplu.201600353

Abstract

There is great interest in developing Mn water-splitting catalysts due to their low cost, abundance, and relevance to the oxygen-evolving complex (OEC). Three ligands with highly donating pyridine alkoxide moieties, including 2-(pyridin-2-yl)propan-2-ol (pyalkH), 2,2'-(pyridine-2,6-diyl)bis(propan-2-ol) (py-dialkH₂ ), and 2-[(2,2'-bipyridin)-6-yl]propan-2-ol (bipy-alkH), have been screened with Mn for oxygen-evolution catalysis. Complexes with the ligand bipy-alkH were shown to evolve O₂ when driven by Oxone (potassium peroxymonosulfate). The catalytic mixture generated from the precursor complex [Mn(bipy-alkH)Cl₂ ] retained activity in unbuffered solution beyond 160 h.

Keywords: homogeneous catalysis; manganese; water oxidation; water splitting.

Abstract

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