Kinetic Screening for the Acid-Catalyzed Hydrolysis of Some Hydrophobic Fe(II) Schiff Base Amino Acid Chelates and Reactivity Trends in the Presence of Alkali Halide and Surfactant
作者： Lobna Abdel-Mohsen E. Nassr , Ahmed M. Abu-Dief
DOI: 10.1002/KIN.20927
关键词: Amino acid 、 Hydrolysis 、 Inorganic chemistry 、 Halide 、 Schiff base 、 Medicinal chemistry 、 Ammonium bromide 、 Cationic polymerization 、 Chemistry 、 Acid hydrolysis 、 Reactivity (chemistry)
摘要: Kinetics of acid-catalyzed hydrolysis some high-spin Fe(II) Schiff base amino acid complexes were followed spectrophotometrically at 298 K under pseudo–first-order conditions. The studied ligands derived from the condensation 5-bromosalicylaldehyde with different four acids (phenylalanine, aspartic acid, histidine, and arginine). reaction was in aqueous media presence concentrations alkali halide (KBr) cationic surfactant (cetyl-trimethyl ammonium bromide, CTAB). general rate equation suggested to be = kobs[complex], where kobs k2[H+]. increase [KBr] enhances reactivity reaction, addition CTAB mixture accelerates reactivity. obtained kinetic data used determine values δmΔG# (the change activation barrier) for when transferred “water water containing [KBr]” altered [CTAB].”
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