'Quenching of Excited States of Metal Complexes

Pt₂[mu-diphosphito(2-)-P,P']₄^4–

excited state quenched by S₂O₈^2–

Peterson, J.R.; Kalyanasundaram, K.
J. Phys. Chem. 89: 2486-92 (1985)

Pt₂[mu-diphosphito(2-)-P,P']₄^4– quenched by S₂O₈^2– at conc. 0.001-0.01 mol L^–1
Solvent : H₂O

k_q = 1.5 x 10⁶(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.

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Pt2[mu-diphosphito(2-)-P,P']44–

Pt₂[mu-diphosphito(2-)-P,P']₄^4–