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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 25, Number 5
BKCSDE 25(5)
May 20, 2004

Title	Stoichiometric Solvation Effects
Author	In Sun Koo*, Kiyull Yang, Hyeon Bae Shin, Sun Kyoung An, Jong Pal Lee, Ikchoon Lee
Keywords	Dispersions, Kinetic solvent isotope effects, Stoichiometric solvation effect
Abstract	Solvolyses of isopropylsulfonyl chloride (IPSC) in water, D2O, CH3OD, and in aqueous binary mixtures of acetone, ethanol and methanol are investigated at 25, 35 and 45 oC. The Grunwald-Winstein plot of first-order rate constants for the solvolytic reaction of IPSC with YCl (based on 2-adamantyl chloride) shows marked dispersions into three separate lines for three aqueous mixtures with a small slope (m < 0.30). The extended Grunwald-Winstein plots for the solvolysis of IPSC show better correlation. The kinetic solvent isotope effects determined in water and methanol are in consistent with the proposed mechanism of the general base catalyzed and/or SAN/SN2 reaction mechanism for IPSC solvolyses based on mass law and stoichiometric solvation effect studies.
Page	699 - 703
Full Text	PDF

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