Composition, stability, and reactivity of cerium(IV) hydroxotartrato complexes in sulfate solutions

被引：0
|
作者：
Voskresenskaya, OO [1 ]
Skorik, NA
机构：
[1] Joint Inst Nucl Res, Dubna 141980, Moscow Oblast, Russia
[2] Tomsk State Univ, Tomsk 634050, Russia
来源：
RUSSIAN JOURNAL OF INORGANIC CHEMISTRY | 2000年 / 45卷 / 12期
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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 formation and redox decomposition of cerium hydroxotartrato complexes in the Ce4+-SO42--H(4)Tart system was investigated spectrophotometrically, potentiometrically, and kinetically at an ionic strength I = 2 and pH 0.62-3.18 at 22-28 degreesC. Two types of complexes were identified: [CeOHTart](1-) and [(CeOH)(2)Tart](2+) The stability constants and the rate constants of intracomplex redox decomposition were determined for these complexes on the sulfate background. Evidence is shown that the redox process in the systems occurs by the intermediate mechanism through the formation of the aforementioned 1 : 1 and 2 : 1 complexes, which have identical reactivity.
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页码：1936 / 1944
页数：9
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