Langmuir

Determination of an ion exchange constant by the use of a kinetic probe: a new semiempirical kinetic approach involving the effects of 3-F-and 4-F-substituted …

NSM Yusof, MN Khan

Index: Yusof, Nor Saadah M.; Khan, M. Niyaz Langmuir, 2010 , vol. 26, # 13 p. 10627 - 10635

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Citation Number: 13

Abstract

Pseudo-first-order rate constants (k obs) for the nucleophilic substitution reaction of piperidine (Pip) with ionized phenyl salicylate (PS−), obtained at a constant [Pip] T (= 0.1 M),[PS−] T (= 2× 10− 4 M),[CTABr] T (cetyltrimethylammonium bromide),≤ 0.06 M NaOH, and a varying concentration of MX (= 3-FC6H4CO2Na, 3-FBzNa and 4-FC6H4CO2Na, 4- FBzNa), follow the kinetic relationship k obs=(k 0+ θ KX/S [MX])/(1+ KX/S [MX]) which is ...