Enhanced nucleophilic reactivity of hydroxamate ions in some novel micellar systems for the cleavage of parathion.
The reactivity of three alpha-nucleophiles, i.e. N-phenylbenzohydroxamate, benzohydroxamate and salicylhydroxamate ions towards cleavage of p-nitrophenyldiethyl phosphorothioate (Parathion) is considerably enhanced in the presence of cationic surfactant, i.e. cetyltrimethylammonium bromide. The esterolytic properties of N-phenylbenzohydroxamate ion for parathion have also been examined in two novel surfactants, viz. cetyltriphenylphosphonium bromide and cetyldimethyl ethanol ammonium bromide. The cetyldimethyl ethanol ammonium bromide is more reactive. The rate-surfactant profiles have been fitted with pseudophase model.
Ghosh
Kallol K
KK
School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur 492010, India. kallolkghosh@yahoo.com
Sinha
Daliya
D
Satnami
Manmohan L
ML
Dubey
D K
DK
Shrivastava
A
A
Palepu
Rama M
RM
Dafonte
P R
PR
D002412:Cations; D000077286:Cetrimonium; D002593:Cetrimonium Compounds / Q000737:chemistry; D006877:Hydroxamic Acids / Q000737:chemistry*; D007306:Insecticides / Q000737:chemistry*; D008823:Micelles; D015394:Molecular Structure; D010278:Parathion / Q000737:chemistry*; D013501:Surface-Active Agents / Q000737:chemistry*
D002412:Cations; D002593:Cetrimonium Compounds; D006877:Hydroxamic Acids; D007306:Insecticides; D008823:Micelles; D013501:Surface-Active Agents; D010278:Parathion; D000077286:Cetrimonium