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http://dx.doi.org/10.5012/bkcs.2009.30.2.378

Correlation of the Rates of Solvolyses of Benzhydryl Halides Using an Extended Grunwald-Winstein Equation  

Koh, Han-Joong (Department of Science Education, Jeonju National University of Education)
Kang, Suk-Jin (Department of Science Education, Jeonju National University of Education)
Kim, Cheol-Ju (Department of Chemistry and Research Institute of Physics and Chemistry, Chonbuk National University)
Publication Information
Bulletin of the Korean Chemical Society / v.30, no.2, 2009 , pp. 378-382 More about this Journal
Abstract
Rates of solvolyses of benzhydryl chloride ($Ph_2$CHCl, 1) and benzhydryl bromide ($Ph_2$CHBr, 2) in ethanol, methanol, and aqueous binary mixtures incorporating ethanol, methanol, 2,2,2-trifluoroethanol (TFE) and acetone are reported. Solvolyses were also carried out in TFE-ethanol mixtures. Application of the extended Grunwald-Winstein equation led to l value of 1.19 (1), 1.29 (2) and m value of 1.00 (1), 0.77 (2), correlation coefficient of 0.965 (1) and 0.970 (2). Sensitivities (l = 1.19 (1), 1.29 (2) and m = 1.00 (1), 0.77 (2)) were similar to those obtained for several previously studied solvolyses, in which an $S_N$2 pathway is proposed for the solvolyses of benzhydryl halides ($Ph_2$CHX, X = Cl or Br).
Keywords
Benzhydryl halides; Extended Grunwald-Winstein equation; $S_{N}2$ pathway;
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