SEARCH Articles Figures Tables Complex metal oxides Complexation by metals Hydroxyl complexes Hydroxylation radical Hydroxylations complex Metal hydroxyl radical Metal radicals Metallic radicals Oxidation by hydroxyl radicals Oxidation by radicals Oxidation radical Oxidative hydroxylation Oxide Radicals Radical complexes Radical hydroxylations Transition metal oxide Transition metal oxide oxides Transition metals oxidation Transition oxides Transition radical