Kinetics and Mechanism of Cationic Flexible Nanoparticles (CFN) – Catalyzed Piperidinolysis of Anionic Phenyl Salicylate: CFN = TTABr/MX/H₂O with MX = NaCl, NaBr; C_nH_2n+1CO₂Na, n = 4, 5, 6 and 7

Abstract

The present study is focused on the effect of the TTABr/MX/H₂O-nanoparticles on the rate of piperidinolysis of ionized phenyl salicylate where TTABr represents tetradecyltrimethylammonium bromide and MX = NaCl, NaBr and C_nH_2n+1CO₂Na with n = 4, 5, 6 and 7. Pseudo-first-order rate constant for the piperidinolysis of ionized phenyl salicylate at 35°C and constant concentration [PSa^–]_T = 0.2 mM, [Pip]_T = 0.1 M, [NaOH] = 30 mM, [TTABr]_T and different [MX] follow an empirical relationship which gives two empirical constant, ^Xk_cat and K^X/S. The value of relative counterion (X) binding constant, R_X^Br were calculated from the relationship; R_X^Br = ^Xk_cat/^Brk_cat. The values of R_X^Br for X = C₄H₉CO₂^–, C₅H₁₁CO₂^–, C₆H₁₃CO₂^–, and C₇H₁₅CO₂^– are increasing with increase in the number of alkyl chain of counterion X.