A linear correlation between half-wave potential (E1/2) for the process M(III)→M(II) and the first d-d transition band (v) of the types cis and trans-[M(en)2X2]n+ (M=Cr(III) and Rh(III), X=ONO−, NCS−, F−, Cl−, Br−, I−, H2O, DMF, DMSO, n=1, 3) was found. The plots of the difference in half-wave potential (ΔE1/2) against the difference in the first d-d transition hand (Δv) for the cis and trans isomer are straight lines. The equations, E1/2=β/nαF+K1 and ΔE1/2=(β/NαF)Δ were derived, and used to describe the linear correlations between polarographic behavior and electronic spectrum.
Relation:
Journal of the Chinese chemical society24(4), p.147-156