Journal
AUSTRALIAN JOURNAL OF CHEMISTRY
Volume 66, Issue 8, Pages 930-937Publisher
CSIRO PUBLISHING
DOI: 10.1071/CH13099
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Funding
- UGC-SAP RFSMS Scholarship
- CSIR [01(2461)/11/EMR-II]
- DST [SR/S1/IC-13/2009]
- UGC [41-223/2012(SR)]
- UGC-SAP & COSIST program of the Department of Chemistry, Bharathidasan University
- DST-FIST program of the Department of Chemistry, Bharathidasan University
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The surfactant cobalt(III) complex, cis-[Co(en)(2)(4CNP)(DA)](ClO4)(3), en = ethylenediamine, 4CNP = 4-cyanopyridine, DA = dodecylamine, was synthesized and characterized by physico-chemical and spectroscopic methods. The critical micelle concentration value of this complex was obtained from the conductivity measurements at different temperatures to evaluate, Delta G(m)(0), Delta H-m(0), and Delta S-m(0). The kinetics of outer sphere electron transfer reaction of this complex with Fe(CN)(6)(4-) ion in micelles, beta-cyclodextrin as well as in liposome vesicles media were studied. The rate constant increases with increase in the concentration of micelles but decreases in presence of beta-cyclodextrin, which is a good structure breaker of micelles. In liposome vesicles media the rate constant is different at below and above phase transition temperature. The results have been explained based on the hydrophobic effect, the presence of pyridine ligand containing 4-cyano substituent and the reactants with opposite charge.
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