Unimolecular Photoredox Decompositions

Charge transfer states are (formally) internal redox processes which are reversed by relaxation to the ground state. However a CT state could also decay by dissociation of the oxidized or reduced ligand resulting in net redox decomposition. An exam- 

6 Pressure Effects on the Photoreactions of Transition Metal Complexes 

Similarly, photolysis of nitroprusside ion Fe(CN)5NO via MLCTexcitation results in the oxidation of the metal and labilization of NO (Eq. 6.26) [74]. The quantum yield for the production of Fe(CN)sS is moderately sensitive to the viscosity of the medium. The values of AV are significantly positive (+7 to +8 cm moN ) and point to the participation of a cage recombination mechanism. 

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