Dioxygen Reactivity Models for Cytochrome C Oxidase: Synthesis and Characterization of Oxo-and Hydroxo-Bridged Porphyrin-Iron/Copper Dinuclear Complexes -(30 refs.). -(NANTHAKU-MAR, A.; FOX, S.; NASIR, S. M.; RAVI, N.; HUYNH, B. H.; OROSZ, R. D.; DAY, E. P.; HAGEN, K. S.; KARLIN, K. D.; Act. Dioxygen Homogeneous