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Kinetics of solvolysis of 2‐chloroquinoxaline
Author(s) -
Patel R. D.
Publication year - 1994
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.550260403
Subject(s) - solvolysis , chemistry , kinetics , methanol , reaction rate constant , entropy of activation , ethanol , solvent , organic solvent , thermodynamics , organic chemistry , hydrolysis , chemical engineering , physics , quantum mechanics , engineering
Pseudo‐first‐order rate constants and activation parameters have been measured for the solvolysis of 2‐chloroquinoxaline in various aquo‐organic mixtures using methanol, ethanol, and isopropanol as the organic solvent. Excellent linear correlations are found between lnk and the mol fraction of cosolvent and ln[H 2 O]. The medium effect on the rates of solvolysis is assessed by Grunwald–Winstein's mY correlationship. The estimated values of m (0.55–0.72) and the entropy of activation (148–212 J deg −1 mol −1 ) for the reactions are well in the range for a bimolecular aromatic substitution reactions. © 1994 John Wiley & Sons, Inc.