Pt2[mu-diphosphito(2-)-P,P']44– excited state quenched by Co(C5H4COOH)2+

Pt₂[mu-diphosphito(2-)-P,P']₄^4– quenched by Co(C₅H₄COOH)₂⁺ at conc. (5-50) x 10^–5 mol L^–1
Solvent : H₂O

k_q = 1.5 x 10⁹(L mol^–1 s^–1)

Mechanism: oxidative electron transfer
Experimental methods: laser flash, luminescence, multiple shot with signal averaging
Lifetime in the absence of quencher, air free = 9.5 micro sec.