Kinetics and mechanism of oxidation of N,N-bis(salicylaldehyde-1,2-diaminoethane) cobalt(II) by N-bromosuccinimide in aqueous acidic medium

被引：0
作者：
Alaa Eldin Mokhtar Abdel-Hady
Rabie S. Farag
Ahmad S. Abu-Khadra
机构：
[1] Sinai University,Faculty of Pharmacy, Department of Pharmaceutical Chemistry
[2] Azhar University,Faculty of Science, Chemistry Department
来源：
Transition Metal Chemistry | 2010年 / 35卷
关键词：
MeOH; Periodate; Transition State Theory; HEDTA; Diaminoethane;
D O I：
暂无
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学科分类号：
摘要：
The kinetics of oxidation of N,N-bis(salicylaldehyde-1,2-diaminoethane) cobalt(II) complex by N-bromosuccinimide (NBS) in aqueous acid and H2O–MeOH solvent mixtures were studied spectrophotometrically over the 20–40 °C range, 0.1–0.5 mol dm−3 ionic strength, 2.2–2.8 pH range and 0–40 wt% MeOH–H2O solvent mixtures for a range of NBS and complex concentrations. The rate shows first-order dependence on both [NBS] and [complex] and decreases with pH over the range studied. The protonated form of N-bromosuccinimide was identified as the main reactive species. An inner-sphere mechanism involving free radicals is proposed.
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页码：571 / 576
页数：5
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