Strong oxidants such as chlorine rad-ical anions' and mORochlorocobalt(III) ions are generated by flash photolysis. Oxidation of nickel(IIrand copper (II) tetraazamacrocyclic complexes are reported. The nickel(III) and copper(III) complexes are stable in st·rongly acidic aqueous solutions. Axial coordination of chloride stabilizes the copper(IlI) state of copper macrocyclic complexes; while nickel(III) state are stabilized at low chloride ion consentration. Thus, an outer-sphere electron- transfer mechanism was propose
M A KHALIFA ,
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