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Catalytic Water Oxidation by a Bio-inspired Nickel Complex with a Redox-Active Ligand.


ABSTRACT: The oxidation of water (H2O) to dioxygen (O2) is important in natural photosynthesis. One of nature's strategies for managing such multi-electron transfer reactions is to employ redox-active metal-organic cofactor arrays. One prototype example is the copper tyrosinate active site found in galactose oxidase. In this work, we have implemented such a strategy to develop a bio-inspired nickel phenolate complex capable of catalyzing the oxidation of H2O to O2 electrochemically at neutral pH with a modest overpotential. Employment of the redox-active ligand turned out to be a useful strategy to avoid the formation of high-valent nickel intermediates while a reasonable turnover rate (0.15 s-1) is retained.

SUBMITTER: Wang D 

PROVIDER: S-EPMC5730068 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature

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Catalytic Water Oxidation by a Bio-inspired Nickel Complex with a Redox-Active Ligand.

Wang Dong D   Bruner Charlie O CO  

Inorganic chemistry 20171103 22


The oxidation of water (H<sub>2</sub>O) to dioxygen (O<sub>2</sub>) is important in natural photosynthesis. One of nature's strategies for managing such multi-electron transfer reactions is to employ redox-active metal-organic cofactor arrays. One prototype example is the copper tyrosinate active site found in galactose oxidase. In this work, we have implemented such a strategy to develop a bio-inspired nickel phenolate complex capable of catalyzing the oxidation of H<sub>2</sub>O to O<sub>2</su  ...[more]

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