'Quenching of Excited States of Metal Complexes

Pt₂[mu-diphosphito(2-)-P,P']₄^4–

excited state quenched by N,N'-Bis(2-sulfonatoethyl)-(vio²⁺) zwitterion

Che, C.-M.; Butler, L.G.; Gray, H.B.
J. Am. Chem. Soc. 103: 7796-7 (1981)

Pt₂[mu-diphosphito(2-)-P,P']₄^4– quenched by N,N'-Bis(2-sulfonatoethyl)-(vio²⁺) zwitterion
Solvent : H₂O, 0.1 mol/L NaClO₄, 25ºC

k_q = 5.5 x 10⁹(L mol^–1 s^–1)

Mechanism: oxidative electron transfer
Experimental methods: emission quenching (method not specified)
Lifetime in the absence of quencher, air free = 9.8 micro sec.

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Pt2[mu-diphosphito(2-)-P,P']44–

Pt₂[mu-diphosphito(2-)-P,P']₄^4–