Pt(CN)42– excited state quenched by FeIII-EDTA

Pt(CN)₄^2– quenched by Fe^III-EDTA at conc. ~9 x 10^–4 mol L^–1
Solvent : H₂O, 24ºC, [Fe]/[L] = 1

k_q = 1.8 x 10⁹(L mol^–1 s^–1)

Experimental methods: steady state irradiation, luminescence
Lifetime in the absence of quencher, air free = 0.45 micro sec. (laser flash, luminescence, single shot signal)
Comments: [S] = 0.092 mol/L, as Ba²⁺ salt; forms oligomers