Advertisement

Electrochemical studies on cobalt tris (acetylacetone)

  • R J Magee
  • Bookhari Annuar
Inorganic and Analytical
  • 64 Downloads

Abstract

The electrochemical reduction of cobalt acetylacetonate (Co(acac)3) at the mercury electrode in propylene carbonate anddmso has been carried out using dc polarography, controlled potential coulometry, chronoamporometry and cyelic voltammetry. In propylene carbonate, polarograms showed two well defined waves, one wave being an adsorption pre-wave, the other an irreversible, diffusion-controlled electron transfer process. From chronoamperometry the diffusion coefficient was determined. Cyclic voltammetry confirmed the polarographic results, although additional adsorption waves were found. Indmso, results were similar to those in propylenecarbonate. However, polarograms showed no adsorption pre-wave and additional adsorption waves found in propylene carbonate in the cyclic voltammograms were absent. The mechanism of the reduction process in both solvents is discussed.

Keywords

Cobalt tris (acetylacetone) electrochemical studies dimethyl sulphoxide propylene carbonate 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Brown E R and Lange R F 1971Techniques in Chemistry, Vol. 1, (eds.) A Weissberger and B W Rcssiter (New York: Wiley Interscience) p. 456Google Scholar
  2. Bryant B E and Fernelius 1957Inorg. Syn. 5 188CrossRefGoogle Scholar
  3. Kolthoff I M and Lingane J J 1952Polarography, Vol. 1 (New York: Interscience) p. 136Google Scholar
  4. Meites L 1965Polarographic Techniques 2nd edn., (New York: Wiley Interscience) p. 139, 216Google Scholar
  5. Patterson G S and Holm R H 1972Inorg. Chem. 11 2285CrossRefGoogle Scholar
  6. Wopschall R H and Shain I 1967Anal. Chem. 39 1514CrossRefGoogle Scholar

Copyright information

© Indian Academy of Sciences 1982

Authors and Affiliations

  • R J Magee
    • 1
  • Bookhari Annuar
    • 1
  1. 1.Department of Inorganic and Analytical ChemistryLa Trobe UniversityBundooraAustralia

Personalised recommendations