An empirical approach to study the occurrence of ion exchange in the ionic micellar‐mediated semi‐ionic reactions: Kinetics of the rate of reaction of piperidine with ionized phenyl salicylate in the presence of cationic micelles
Copyright policy )An empirical approach to study the occurrence of ion exchange in the ionic micellar‐mediated semi‐ionic reactions: Kinetics of the rate of reaction of piperidine with ionized phenyl salicylate in the presence of cationic micelles
AbstractPseudo‐first‐order rate constants (kobs)—obtained for the cleavage of ionized phenyl salicylate (PS−) at constant [NaOH], [MeCN], [CTAZ]T (total concentration of cetyltrimethylammonium chloride and bromide), [Pip]T (total concentration of piperidine), and varying concentrations of sodium cinnamate, acetate, and butanoate ([NaX])—follow the relationship: kobs = (k0 + θ K[NaX])/(1 + K[NaX]), where θ and K are empirical parameters. The values of θ are almost independent of [CTAZ]T, while K values decrease with the increase in [CTAZ]T within its range 0.006–0.020 M. The values of θ and K are explained in terms of pseudophase model of micelle coupled with an empirical relationship: KS = KS0/(1 + ΨX/S [NaX]), where KS is the CTAZ micellar binding constant of PS− in the presence of NaX. © 2001 John Wiley & Sons, Inc. Int J Chem Kinet 33: 288–294, 2001
- Universiti Malaysia Terengganu Malaysia
- University of Malaya Malaysia
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