Cr(CN)63– excited state quenched by Naphthacene

Cr(CN)₆^3– quenched by Naphthacene
Solvent : DMF, 22ºC

k_q = 3.5 x 10⁷(L mol^–1 s^–1)
Activation energy = 2.6 (–55 to 60 ºC)(kJ mol^–1)
Entropy of activation = –102(J K^–1 mol^–1)

Mechanism: energy transfer
Experimental methods: laser flash, luminescence, single shot signal
Lifetime in the absence of quencher, air free = 6500 micro sec.
Comments: tau₀ at 25 ºC