Full Paper
Kinetics of the Reaction of 2-Chloro-3,5-dinitrobenzotriflouride with Aniline in Toluene and Methanol-Toluene Mixed Solvents
Magda F. Fathalla,
Corresponding Author
Magda F. Fathalla
Chemistry Department, Faculty of Science, Alexandria University, P.O. 426 Ibrahimia, Alexandria 21321, Egypt
Chemistry Department, Faculty of Science, Alexandria University, P.O. 426 Ibrahimia, Alexandria 21321, EgyptSearch for more papers by this authorMagda F. Fathalla,
Corresponding Author
Magda F. Fathalla
Chemistry Department, Faculty of Science, Alexandria University, P.O. 426 Ibrahimia, Alexandria 21321, Egypt
Chemistry Department, Faculty of Science, Alexandria University, P.O. 426 Ibrahimia, Alexandria 21321, EgyptSearch for more papers by this authorFirst published: 16 January 2012
Abstract
Kinetics of the reaction of 2-chloro-3,5-dinitrobenzotriflouride with aniline were studied in toluene, methanol-toluene binary solvents, benzene and chloroform. The reaction in toluene exhibits third-order kinetics consistent with aggregates of aniline. Thermodynamic parameters (H#, (S# and (G#are calculated and discussed for the reaction of 2-chloro-3,5-dinitrobenzotriflouride with aniline in methanol-toluene. Molecular complexes between aniline and the substrate are rejected spectrophotometricaly. The mechanism is studied and compared with the reaction in presence of pyridine. It shows an amine dependence and formation of homo and/or hetero mixed aggregates between aniline and pyridine i.e. dimer mechanism.
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