Fig. 3. Proposed ES diagram to explain photoaquation of aq. Ru(NH3)5(py)2+ upon irradiation of MLCT bands. kP is the rate constant for reactions to photoproducts. kic/isc, kn and kr are rate constants for internal conversion/intersystem crossing to a lowest energy metal centered excited state, nonradiative deactivation to the ground state 1GS and radiative deactivation (emission), respectively.
