Excited state electron transfer from photoexcited fac-CIRe(CO)₃(2,2′-bipyridine) to N,N′-dimethyl-4,4′-bipyridinium detected by transient

Pulsed laser excitation of fac-CIRe(CO)₃(bpy) in CH₃CN containing N,N′-dimethyl-4,4′-bipyridinium, MV²⁺, results in excited state electron transfer to form MV⁺ that can be detected by the Raman scattering from the trailing portion of the 18 ns 354.7 nm pulse from the frequency-tripled Nd : YAG laser excitation source. Essentially the same results are found for the pulsed excitation of Ru(bpy)₃²⁺ in H₂O containing MV²⁺.