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1578255 
Journal Article 
MICELLAR CATALYSIS ON THE REDOX REACTIONS OF DIALKYL SULFIDES WITH CHROMIUM(VI) 
Sankararaj, B; Rajagopal, S; Pitchumani, K 
1995 
1 
Indian Journal of Chemistry. Section A
ISSN: 0376-4710
EISSN: 0975-0975 
34 
6 
440-445 
WOS:A1995QZ20300005 
Chromium(VI) oxidation of diethyl sulphide (DES), diisopropylsulphide(DPS), di-n-butyl sulphide (DBS) and di-t-butyl sulphide (DTBS) in 99% acetonitrile-1% water(v/v) follows second order kinetics, first order in each reactant. A mechanism involving the rate determining nucleophilic attack of sulphide on Cr of H2CrO4 followed by fast ligand coupling between O- and S+ to form sulphoxide as the product has been formulated. The anionic surfactant, sodium dodecyl sulphate, catalyses and the cationic surfactant, cetyltrimethylammonium chloride, inhibits the rate of oxidation which is explained by the proposal that the reaction takes place both in aqueous and micellar phases. The catalytic role. of H+ and development of positive charge on sulphur due to the electron transfer from sulphide to Cr(VI) favour the reaction in the anionic micelle and disfavour in the cationic micelle. 
IRIS
• Chromium VI
     Considered
          Excluded
               Other Not Pertinent