Kinetics of oxidation of l-cysteine by cobalt (III), iron (III), and chromium (III) complexes of salicylaldiminato ligands
Joint Authors
Abd al-Halim, Hamzah M.
Abu Surrah, Adnan S.
Bakr, Hutaf Mustafa
Source
Issue
Vol. 7, Issue 1 (31 Mar. 2012), pp.33-40, 8 p.
Publisher
Yarmouk University Deanship of Research and Graduate Studies
Publication Date
2012-03-31
Country of Publication
Jordan
No. of Pages
8
Main Subjects
Topics
Abstract EN
Kinetics of oxidation of L-cysteine by penta-coordinated Co (III), Fe(III), and Cr(III) complexes of salicylaldiminato ligands have been studied in aqueous solutions.
Metal complexes of Nsalicylidinecyclohexylamine, N-salicylidinisopropylaniline, N-salicylidinnaphthylamine, N-(4- sulfonitsalicylidine)cyclohexylamine, and N-(4-sulfonatesalicylidine)-2-isoprpylaniline were used in the studies.
Measurements were run at constant temperature (25º C), constant ionic strength (0.20 M), and constant pH (7.0) under pseudo-first order conditions, in which the concentration of cysteine is around two orders of magnitude greater than that of metal complex.
The observed rate constant was determined by following the change in absorbance of reaction mixture at a predetermined wavelength with time.
Results show that the rate of oxidation depends on steric factor and the electron withdrawing / releasing ability of the ligand bound to the metal ion.
It also depends on the metal center.
The Co(III) complexes were found to have the highest rates due to higher reduction potential of Co(III).
American Psychological Association (APA)
Abd al-Halim, Hamzah M.& Abu Surrah, Adnan S.& Bakr, Hutaf Mustafa. 2012. Kinetics of oxidation of l-cysteine by cobalt (III), iron (III), and chromium (III) complexes of salicylaldiminato ligands. Jordan Journal of Chemistry،Vol. 7, no. 1, pp.33-40.
https://search.emarefa.net/detail/BIM-311154
Modern Language Association (MLA)
Abd al-Halim, Hamzah M.…[et al.]. Kinetics of oxidation of l-cysteine by cobalt (III), iron (III), and chromium (III) complexes of salicylaldiminato ligands. Jordan Journal of Chemistry Vol. 7, no. 1 (Mar. 2012), pp.33-40.
https://search.emarefa.net/detail/BIM-311154
American Medical Association (AMA)
Abd al-Halim, Hamzah M.& Abu Surrah, Adnan S.& Bakr, Hutaf Mustafa. Kinetics of oxidation of l-cysteine by cobalt (III), iron (III), and chromium (III) complexes of salicylaldiminato ligands. Jordan Journal of Chemistry. 2012. Vol. 7, no. 1, pp.33-40.
https://search.emarefa.net/detail/BIM-311154
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 39-40
Record ID
BIM-311154