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http://dx.doi.org/10.5012/jkcs.2004.48.5.461

Nucleophile Effects for the Reactions of Nucleophilic Substitution by Pressure and Temperature  

Kim, Se-Kyong (Department of Chemistry, Hanyang University)
Choi, Sung-Yong (Department of Chemistry, Hanyang University)
Ko, Young-Shin (Department of Science Education, Seoul National University of Education)
Publication Information
Journal of the Korean Chemical Society / v.48, no.5, 2004 , pp. 461-466 More about this Journal
Abstract
Kinetics for the nucleophiles have been studied under high vacuum and high pressures in various temperatures. Pseudo-first order rate constants, second order rate constants, thermodynamic parameters and Hammett ${\rho}$-values are determined. The values of ${\Delta}V^{\neq},\;{\Delta}{\beta}^{\neq}\;and\;{\Delta}S^{\neq}$are all negative. The Hammett r-values are negative for the nucleophile (${\rho}$x) over the pressure range studied. The results of kinetic studies for pressure and nucleophilet show that these reactions proceed in typical $S_N2$ reaction mechanism and change of mechanism.
Keywords
Nucleophile; Kinetics; High Pressure; High Vacuum; Substituent Effect;
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Times Cited By KSCI : 1  (Citation Analysis)
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