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Hydrolysis Kinetic Studies of Schiff Bases Derived from Pyrrolic Aldehydes in Buffered Aqueous Ethanol and Sulfuric Acid Solutions: Structural Effects of Substitutes
Author(s) -
Bengharez Zohra,
El Bahri Zineb,
Mesli Abderrezzak
Publication year - 2013
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.20777
Subject(s) - chemistry , hydrolysis , aniline , sulfuric acid , aqueous solution , kinetics , reaction rate constant , methylene , inorganic chemistry , kinetic energy , schiff base , ethanol , methylene blue , organic chemistry , polymer chemistry , catalysis , physics , quantum mechanics , photocatalysis
Two series of substituted N ‐pyrrolyl‐2‐methylene‐aniline were synthesized and characterized to study their stability in a large domain of pH (0–14) and especially in the H 0 domain (–4 to 0). The hydrolysis kinetics of the azomethine group was established in homogeneous media using a thermostated UV–vis spectrophotometer. The hydrolysis mechanism was investigated, and the experimental kinetic constants were calculated. Then, the pH–rate diagram profile was determined and the structural effect of substitutes on the kinetic constants was clarified and discussed.