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Research Article
Salt effects on the reactivity of the base-catalyzed hydrolysis of some novel low-spin hydrophobic Fe(II)–amino acid azomethine chelates
Article first published online: 3 SEP 2003
DOI: 10.1002/kin.10156
Copyright © 2003 Wiley Periodicals, Inc.
1097-4601/asset/cover.gif?v=1&s=430ad3513895643cda5d86bafeb7d54ba781278b "International Journal of Chemical Kinetics")
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How to Cite
Shaker, A. M. and Nassr, L. A. E. (2003), Salt effects on the reactivity of the base-catalyzed hydrolysis of some novel low-spin hydrophobic Fe(II)–amino acid azomethine chelates. Int. J. Chem. Kinet., 35: 592–601. doi: 10.1002/kin.10156
Publication History
- Issue published online: 3 SEP 2003
- Article first published online: 3 SEP 2003
- Manuscript Accepted: 2 JUL 2003
- Manuscript Received: 27 AUG 2002
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Abstract
Salt effects on the reactivity of base hydrolysis of Fe(II) chelates [naphthylideneisoleucinate (nili), naphthylideneleucinate (nli), naphthylideneserinate (nsi), salicylideneisoleucinate (sili), salicylideneleucinate (sli), salicylidenemethioninate (smi), and salicylidenetryptophanate (sti)] have been investigated in aqueous media containing alkali metal halides and tetra-n-butylammonium bromide (TBAB). NaCl and NaBr exhibited different reactivity trends from those of KBr and TBAB.
The observed patterns vary markedly with complex hydrophobicity. Generally, the presence of the salt markedly enhances the rate compared to its absence. This behavior agrees with the anionic nature of the transient species. With increasing added NaCl and NaBr, the rate of the reaction decreases. The rate decreases and then increases on increasing the concentration of KBr and TBAB. © 2003 Wiley Periodicals, Inc. Int J Chem Kinet 35: 592–601, 2003