Ru(bpy)32+ excited state quenched by CoIII(CN)5(mu-O2)CoIII(CN)55–

Ru(bpy)₃²⁺ quenched by Co^III(CN)₅(mu-O₂)Co^III(CN)₅^5–
Solvent : H₂O, 0.1 mol/L HCl, 25ºC, ionic strength 0.25 (NaCl)

k_q = 4.8 x 10⁹(L mol^–1 s^–1)

Mechanism: oxidative electron transfer
Experimental methods: laser flash, luminescence, single shot signal