Oxidation of Benzoatopentaamminecobalt(III) by Hydroxyl Radicals

H. Cohen, D. Meyerstein

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


The reaction of hydroxyl radicals with benzoatopentaamminecobalt(III) yields a radical formed by the addition of the OH to the aromatic ring. The spectrum of the radical formed is very similar to that formed by the reaction of OH radicals with free benzoate ions. The specific rates of formation and disappearance of the radical were measured. The disappearance follows a second-order mechanism. The yield of Co2+ depends on the steady-state concentration of the radicals formed and is always considerably less than one, based on the concentration of OH radicals introduced. It is concluded that the overlap between the orbitals on the central Co(III) atom and the conjugated double bond system of the radical is small. Furthermore, if an inner-electron transfer from the radical to the central Co(III) atom takes place, the specific rate of this reaction is less than 102 sec-1.

Original languageEnglish
Pages (from-to)4179-4183
Number of pages5
JournalJournal of the American Chemical Society
Issue number17
StatePublished - 1 Aug 1971
Externally publishedYes

ASJC Scopus subject areas

  • Catalysis
  • Chemistry (all)
  • Biochemistry
  • Colloid and Surface Chemistry


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