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2 Polish Journal of Chemistry

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Cyclic Voltammetry and Electronic Absorption Spectroscopy in Investigations of the Nature of the Electrochemical reduction of Phenyldiazonium and Phenyl-bis-diazonium Cations

Koval'chuk E., Kozlovs'ka Z., Jackowska K., Roshal A., Wróblewska A., Reshetnyak O., Błażejowski J.

Polish Journal of Chemistry

2004

Vol. 78 / nr 1

139-147

The electrochemical reduction of phenyldiazonium and phenyl-bis-diazonium cations on mercury drop and platinum cathodes exhibits a multistep nature, as demonstrate the results of polarographic and cyclic voltammetry measurements. The primarily formed radicals participate in various secondary processes, as a result of which occur species absorbing UV-VIS radiation. Electronic absorption in the visible region can be ascribed to entities forming from the recombination of two azophenyl or azophenyl and phenyl radicals, originating from the one- or two-electron reduction of primarily or secondary formed cations.

Electrochemistry of Diazonium Salts. Pathways of Electrochemically Initiated Polymerization Processes

Koval'chuk E., Kozlowska Z., Jóźwiak L., Błażejowski J.

Polish Journal of Chemistry

2000

Vol. 74, nr 1

67-78

The electrochemical reduction of several diazonium cations was examined on drop and stationary Hg-electrodes immersed in 1 M NaClO4 bacground electrolyte and water, acetone or water-acetone mixtures. Possible applications of the electrochemical reduction of diazonium cations as polymerization (polycondensation) initiators are suggested.