On the application of Koutecky–Levich analysis to electrochemical processes involving metal complexes. 2. Experimental examples

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Cathodic RDE voltammograms obtained for the reduction of Ag(I) complexes with glycine, sulfite and cyanide were analysed using a modified Koutecky–Levich approach. To extend this method to processes involving ligands, the composition of the electrically active complex was taken into account. For this purpose, the initial experimental data were modified using special correction functions. Experimental data were analysed with the involvement of information on the complexation characteristics and the mechanism of charge transfer. The scope of the basic model and factors requiring further evaluation were discussed.