Ru(5-Clphen)32+ excited state quenched by Eu2+

Ru(5-Clphen)₃²⁺ quenched by Eu²⁺ at conc. 0.01-0.09 mol L^–1
Solvent : H₂O, 0.05 mol/L HCl, 25ºC, ionic strength 0.5 (NaCl)

k_q = 1.0 x 10⁸(L mol^–1 s^–1)

Mechanism: reductive electron transfer
Experimental methods: steady state irradiation, luminescence
Lifetime in the absence of quencher, air free = 0.94 micro sec. (766404)