Some features of electroreduction of cobalt (II) dipyridyl complexes on a mercury electrode

  • Vadim Statcuk Institute of Organic Catalysis and Electrochemistry named after D.V. Sokolsky, Almaty
  • Erezhep Mambetkaziev al-Farabi Kazakh National University
  • Dyisek Kamysbayev al-Farabi Kazakh National University
  • L. Fogel al-Farabi Kazakh National University
Keywords: mercury electrode, ac-polarographic curves, dypyridyl complexes, outer-sphere associates, cobalt (II), electroreduction rate constant


It has been established that acceleration of cobalt (II) dipyridyl complexes Co(dipy)32+ electroreduction on a mercury electrode is caused by stabilization of Co(dipy)3 reduction forms. It has been show that stabilization of these complexes is caused by formation of outer-sphere associates adsorbed on an electrode surface with anions of supporting electrolytes stability of which increases in a row CI - <NO3 - <CIO4-.


1 Heyrovsky J. (1966) Principles of Polarography. Academic Press. ISBN: 0123466504

2 Tur’yan YaI (1980) Chemical Reactions in Polarography [Himicheskie reakcii v Polyarograpii]. Himia, Moscow, Russia. (In Russian)

3 Ruviskiy OYe, Tur’yan YaI (1976) Journal of Analytical Chemistry [Zhurnal analiticheskoy himii] 31:543-550.

4 Osipova EA, Prokhorov GV Minochkina LN (1977) Moscow University Chemistry Bulletin 18:321-325.

5 Schwarz HN, Crentz C, Sutin N (1985) Inorg Chem 24:433-439.

6 Tanaka N, Sato Y (1968) Bull Chem Soc Japan 41:2059-2064.

How to Cite
Statcuk, V., Mambetkaziev, E., Kamysbayev, D., & Fogel, L. (2014). Some features of electroreduction of cobalt (II) dipyridyl complexes on a mercury electrode. Chemical Bulletin of Kazakh National University, 75(3), 56-60.
Physical Chemistry and Electrochemistry