Kinetics, mechanism and intermediates of some radiation-induced reactions in aqueous solutions

The results of pulse radiolysis studies of the kinetics and mechanism of fast one-electron redox reactions of halide ions, metal ions, actinides and other compounds with hydrated electrons, hydroxyl and other radicals and hydrogen atoms and the properties of intermediates formed in these reactions are analysed. The oxidation of a mixture of chloride and bromide ions yields mixed radical anions ClBr^-·. Data on the formation of metal atoms and ions in unusual and unstable oxidation states by the reduction of metal ions in aqueous solutions and on the reactions involving such ions are presented. It is shown that the reduction of compounds in aqueous solutions with organic radicals takes place through outer- or inner-sphere electron transfer.