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Oxidation of substituted benzaldehydes by quinolinium chlorochromate: A structure and solvent dependent kinetic study
Author(s) -
Jeyanthi G. Fatima,
Elango K. P.
Publication year - 2003
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.10112
Subject(s) - chemistry , solvent , reactivity (psychology) , solvent effects , kinetics , hydrogen bond , reaction rate constant , hammett equation , photochemistry , organic chemistry , computational chemistry , molecule , medicine , physics , alternative medicine , pathology , quantum mechanics
The kinetics of oxidation of several para‐substituted benzaldehydes by quinolinium chlorochromate was studied under pseudo‐first‐order conditions in different (hydrogen bond donor and hydrogen bond acceptor) neat organic solvents. The operation of nonspecific and specific solvent–solvent–solute interactions was explored by correlating the rate data with solvent parameters through correlation analysis. Both electron‐releasing and electron‐withdrawing substituents enhanced the rate and the Hammett plot showed a break in the reactivity order indicating applicability of dual mechanism. An explanation in conformity with structure and solvent effects on reactivity has been proposed. © 2003 Wiley Periodicals, Inc. Int J Chem Kinet 35: 154–158, 2003