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Indian Journal of Chemistry -Section A (IJC-A) >
IJC-A Vol.48A [2009] >
IJC-A Vol.48A(06) [June 2009] >
| Title: | Kinetic assessment of relative counterion penetration into cationic micelles: Effects of inert salt on the rate of piperidinolysis of phenyl salicylate in alkaline cationic micellar medium |
| Authors: | Khan, M Niyaz
Ismail, Emran |
| Keywords: | Kinetics
Reaction mechanisms
Micellar reactions
Counterion penetration
Micellar penetration
Piperidinolysis |
| Issue Date: | Jun-2009 |
| Publisher: | CSIR |
| IPC Code: | Int. Cl.8 C07B41/00 |
| Abstract: | Pseudo-first order rate constants for piperidinolysis of ionized phenyl salicylate, obtained at 0.1 M piperidine, constant concentration of CTABr micelles and varying values of [NaOC6H4CO2Na], follow the empirical relationship: kobs = (k0 + q KX/S[MX])/(1 + KX/S[MX]), where q and KX/S are empirical constants, MX = NaOC6H4CO2Na and k0 = kobs at [MX] = 0. The values of q and KX/S are explained in terms of pseudophase micellar model coupled with an empirical relationship: KS = KS0/(1 + KX/S[MX]), where KX/S is an empirical constant and KS and KS0 are CTABr micellar binding constants of PS- (i.e., S = PS-) in the presence and absence of MX, respectively. |
| Page(s): | 781-787 |
| ISSN: | O975-0975 (Online); 0376-4710 (Print) |
| Source: | IJC-A Vol.48A(06) [June 2009]
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