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8160663 
Journal Article 
Kinetics and mechanism of oxidation of diclofenac sodium by Keggin type 12-tungstocobalt(III) in aqueous medium 
Sanjana, M; Patnaik, AK; Mohanty, P; Badamali, SK 
2018 
Yes 
Asian Journal of Chemistry
ISSN: 0970-7077
EISSN: 0975-427X 
30 
1 
179-182 
English 
The kinetics of electron transfer reaction of diclofenac sodium with 12-tungstocobaltate (III) complex has been studied spectrophotometrically over the range 2.0 × 10-3 ≤ [diclofenac sodium] ≤ 6.0 × 10-3 mol/L, 6.03 ≤ pH ≤ 8.0 and at 293 ≤ T ≤ 308 K in aqueous medium at constant ionic strength I (0.5 mol/L sodium perchlorate). The electron transfer reaction showed pseudo-first order dependence in [diclofenac sodium] and [12-tungstocobaltate(III)] and less than unit order in [OH–]T. The activation parameters calculated for the electron transfer reaction favoured the formation of a precursor complex between the reactants. The product is characterized by FTIR and NMR spectra and is found to be [2-(2,6-dichloro phenylamino)phenyl]methanol. © 2018, Chemical Publishing Co. All rights reserved. 
12-Tungstocobaltate(III); Diclofenac sodium; Keggin type; Kinetic; Oxidation