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

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• 作者：Thoe K. Michaelos ; Hannah M. C. Lant ; Liam S. Sharninghausen ; Stephanie M. Craig ; Fabian S. Menges ; Brandon Q. Mercado ; Gary W. Brudvig and Robert H. Crabtree
• 刊名：ChemPlusChem
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：81
• 期：10
• 页码：1129-1132
• 全文大小：586K
• ISSN：2192-6506

文摘

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.