Kinetics and mechanism of single electron oxidations of the tervalent uranium ion, U3+(aq), by free radicals in aqueous solutions

Daniel Golub, Haim Cohen, Dan Meyerstein

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

The specific rates of oxidation of U3+(aq) by OH., Cl2.-, Br2.-, I2.-, (NCS)2.-, .CH2CO2H, .CH(CH3)CO2H, .CH2C(CH3)2OH, and .CH3 are reported. The results are interpreted as indicating that all these reactions occur via an inner-sphere mechanism with an increase in co-ordination number. This conclusion contradicts earlier suggestions that oxidations of aqua complexes by OH. radicals proceed via hydrogen-atom abstraction from one of the aqua ligands. The specific rate of the reaction U3+(aq) + H2O2 is estimated to be 2 × 105 dm3 mol-1 s-1.

Original languageEnglish
Pages (from-to)641-644
Number of pages4
JournalJournal of the Chemical Society. Dalton Transactions
Issue number4
DOIs
StatePublished - 1 Dec 1985

ASJC Scopus subject areas

  • General Chemistry

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