Unusual Water Oxidation Mechanism via a Redox-Active Copper Polypyridyl Complex.

ABSTRACT: To improve Cu-based water oxidation (WO) catalysts, a proper mechanistic understanding of these systems is required. In contrast to other metals, high-oxidation-state metal-oxo species are unlikely intermediates in Cu-catalyzed WO because π donation from the oxo ligand to the Cu center is difficult due to the high number of d electrons of Cu^II and Cu^III. As a consequence, an alternative WO mechanism must take place instead of the typical water nucleophilic attack and the inter- or intramolecular radical-oxo coupling pathways, which were previously proposed for Ru-based catalysts. [Cu^II(HL)(OTf)₂] [HL = Hbbpya = N,N-bis(2,2'-bipyrid-6-yl)amine)] was investigated as a WO catalyst bearing the redox-active HL ligand

SUBMITTER: den Boer D 

PROVIDER: S-EPMC10091478 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature