Kinetics of the Formation of an Active Oxo Species of µ-Carbidodimeric Water-Soluble Iron(IV) Sulfophthalocyanine in the Reaction with tert-Butyl Hydroperoxide

Abstract

The kinetic characteristics were determined for the formation of a highly active oxo species of µ-carbidodimeric water-soluble iron(IV) sulfophthalocyanine under the action of tert-butyl hydroperoxide. The reaction rate was found, and a possible reaction mechanism was proposed. It was determined that the formation of a radical cation in the macrocycle of µ-carbidodimeric iron(IV) sulfophthalocyanine is preceded by coordination of the peroxide molecule with subsequent homolytic cleavage of the O-O bond. The oxo species formed in the reaction can oxidize organic peroxide and is readily regenerated in the presence of an organic base. The activity of the radical-cation species of the dimeric iron(IV) complex in the methyl orange oxidation reaction was shown.