Electrochemical study and dependence of ‘transition state’ in Co(II) and Ni(II) complexes with some antibiotics and cephalothin
Article Sidebar
Main Article Content
Abstract
[M – antibiotics – cephalothin] system were reported at pH = 7.30 ± 0.01 at suitable supporting
electrolyte at 25.0 0 C. The M = Co or Ni and antibiotics were doxycycline, chlortetracycline,
oxytetracycline, tetracycline, minocycline, amoxicillin and chloramphenicol used as primary
ligands and cephalothin as secondary ligand. Kinetic parameters viz. transfer coefficient (a),
degree of irreversibility (l), diffusion coefficient (D) and rate constant (k) were determined.
The values of a and k varied from 0.41 to 0.59 and 2.60 X 10 -3 cm s -1 to 9.67 X 10 -3 cm s -1
in case of [Co – antibiotics – cephalothin] system. In case of [Ni – antibiotics – cephalothin],
a and k varied from 0.41 to 0.58 and 2.34 X 10 -3 cm s -1 to 9.19 X 10 -3 cm s -1 respectively
confirmed that transition state behaves between oxidant and reductant response to applied
potential and it adjusts it self in such a way that the same is located midway between dropping
mercury electrode and solution interface. The values of rate constant confirmed the
quasireversible nature of electrode processes. The stability constants (logb) of complexes
were also determined.
Metrics
Article Details
This work is licensed under a Creative Commons Attribution 4.0 International License.
The corresponding author transfers the copyright of the submitted manuscript and all its versions to Eclet. Quim., after having the consent of all authors, which ceases if the manuscript is rejected or withdrawn during the review process.
When a published manuscript in EQJ is also published in other journal, it will be immediately withdrawn from EQ and the authors informed of the Editor decision.
Self-archive to institutional, thematic repositories or personal webpage is permitted just after publication. The articles published by Eclet. Quim. are licensed under the Creative Commons Attribution 4.0 International License.
References
M. Breiter, M. Kleinerman, P. Delahay, J. Am.
Chem. Soc.80 (1958) 5111.
P. Delahay, I. Trachtenberg, J. Am. Chem. Soc.
(1957) 2355.
J. Koryta, Electrochim. Acta 6 (1962) 67.
V. H. Matsuda, Z. Elektrochem. 62 (1958) 977.
P. J. Gellings, Z. Elektrochem. Ber. Bunsenges.
Physik. Chem. 67 (1963) 167.
F. Khan, Oxid. Commun. 30 (2007) 185.
J. E. Fergusson, The Heavy Elements:
Chemistry, Environmental Impact and Health,
Pergamon Press, Oxford, 1990.
H. A. Waldron, Metals in the Environment of
the Elements, Academic Press,
London, 1979.
. F. Khan, J. Chin. Chem. Soc, 54 (2007) 673.
F. Khan, J. Indian Chem. Soc., 84 (2007) 96.
L. Meites, “Polarographic Techniques”
Interscience Pub., New York, 1965.
F. Khan, L. Tantuvay, J. Pharm. Biomed. Anal.
(2002) 933.
T. Devries, J. L. Kroon, J. Am. Chem. Soc.75
(1953) 2484.
P. J. Gellings, Z. Electrochem. Ber Bun. Phys.
Chem. 66 (1962) 477.
J. J. Lingane, Chem. Rev. 29 (1941) 1.
D. Deford, D. N. Hume, J. Am. Chem. Soc. 73
(1951) 5321.
W. B. Schaap, D. L. McMaster, J. Am. Chem.
Soc. 82 (1961) 4699.
L. Tantuvay, F. Khan, Bull. Electrochem. 20
(2004) 327.
F. Khan, A. K. Kesharwani, J. Indian Chem.
Soc. 80 (2003) 47.
C. R. Stephens, L. H. Conover, R. Pasternack,
F. A. Hochskin, W. T. Moreland, P. P. Regna, F. J.
Pilgrim, K. J. Brunnings, R. V. Woodland, J. Am.
Chem. Soc. 76 (1954) 3568.
A. E. Martell, M. Calvin, Chemistry of Metal
Chelate Compounds, Prentice, Hall, New York,
chap. 4.