SEARCH Articles Figures Tables Activation of Dioxygen by Cobalt Group Activation of Dioxygen by Cobalt Group Metal Complexes Activation of Triplet Dioxygen by Bio-inspired Cuprous Complexes Dioxygen activation Free Forms of Activated Dioxygen Generated by Metals General Features of Dioxygen Activation in Heme Enzymes Precedents for Metal-Activation of Dioxygen Structural Input into the Mechanisms of P450-Catalyzed Dioxygen Activation