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Role of proton-coupled electron transfer in the redox interconversion between benzoquinone and hydroquinone

Role of proton-coupled electron transfer in the redox interconversion between benzoquinone and hydroquinone

Journal of the American Chemical Society 134(45): 18538-18541

Benzoquinone/hydroquinone redox interconversion by the reversible Os(dmb)(3)(3+/2+) couple over an extended pH range with added acids and bases has revealed the existence of seven discrete pathways. Application of spectrophotometric monitoring with stopped-flow mixing has been used to explore the role of PCET. The results have revealed a role for phosphoric acid and acetate as proton donor and acceptor in the concerted electron-proton transfer reduction of benzoquinone and oxidation of hydroquinone, respectively.

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Accession: 055610963

Download citation: RISBibTeXText

PMID: 23113818

DOI: 10.1021/ja308700t

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