Reduction of the complexes of cadmium(II) and lead(II) atdme in aqueous and aqueous-methanol media at μ = 1.0 M(NaClO4) at 15 ±0.1 and 25 ±0.1°C is reversible and diffusion-controlled. Four complex species are formed in either case. The overall stability constants of 1:1,1:2, 1:3 and 1:4 complexes have been determined. Lead(II) complexes are much stronger than the corresponding cadmium(II) complexes.
