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Kinetics and mechanism of the reaction of the bis(1,10-phenanthroline)copper(I) ion with hydrogen peroxide in aqueous solution

Journal Article · · J. Am. Chem. Soc.; (United States)
DOI:https://doi.org/10.1021/ja00241a015· OSTI ID:6367473
Investigations of the reaction of the bis(1,10-phenanthroline)copper(I) ion, Cu(phen)/sub 2//sup +/, with hydrogen peroxide in the presence of a scavenger (RH = methanol, ethanol, 2-propanol, or formate ion) and of the reactions initiated by radiation-produced hydroxyl free radical, OH/sup ./, in similar systems in the absence of H/sub 2/O/sub 2/ show that OH/sup ./ is not formed by the Cu(phen)/sub 2//sup +/ + H/sub 2/O/sub 2/ reaction. The observed kinetics and stoichiometry of this reaction are interpreted in terms of a mechanism involving an intermediate, possibly a Cu-H/sub 2/O/sub 2/ complex, formed by reaction of Cu(phen)/sub 2//sup +/ with H/sub 2/O/sub 2/. The rate constant for the reaction of this intermediate with RH is smaller, by a factor of at least 10/sup 4/, than that for the reaction of OH/sup ./ with RH.
Research Organization:
The University, Newcastle upon Tyne, England
OSTI ID:
6367473
Journal Information:
J. Am. Chem. Soc.; (United States), Journal Name: J. Am. Chem. Soc.; (United States) Vol. 109:7; ISSN JACSA
Country of Publication:
United States
Language:
English