Kinetics and mechanism of oxidation of iminodiacetatochromium(III) by periodate

被引：0
|
作者：
Ewais, Hassan A. [1 ]
Al-Otaibi, Faris D. [1 ]
Abdel-Khalek, Ahmed A. [1 ]
机构：
[1] Cairo Univ, Fac Sci Beni Suef, Dept Chem, Bani Suwayf, Egypt
来源：
INORGANIC REACTION MECHANISMS | 2006年 / 6卷 / 01期
关键词：
chromium(III); iminodiacetic acid complex; penodate; oxidation kinetic; activation parameters;
D O I：
暂无
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The kinetics of oxidation of the chrotnitlln(III)-iminodiacetic acid complex. [Cr-III(HIDA)(IDA)(H2O)] by periodate in aqueous solution to Cr-VI have been studied spectrophototnetrically over the 35 - 55 degrees C range. The reaction is first order with respect to both [IO4-] and [Cr-III], and increases with pH over the 2.62 - 3.65 range. Thermodynamic activation parameters have been calculated. It is proposed that electron transfer proceed through an inner-sphere mechanism via coordination of IO4- to chromium(III).
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页码：39 / 47
页数：9
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