Polarographic Behavior of Manganese(II) in the Presence of Oxalate Ions in Perchlorate and Sulfate Solutions

被引：0
作者：
Jadwiga Urbańska
机构：
[1] University of Wrocław,Faculty of Chemistry
来源：
Journal of Solution Chemistry | 2011年 / 40卷
关键词：
Polarography; Manganese(II) complexes; Oxalate complexes; Stability constants; Electrode reduction mechanism;
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摘要：
The dc polarographic method has been applied to study coordination equilibria between Mn(II) and oxalate ions in perchlorate and sulfate solutions. The stoichiometries of complexes formed in solution and those reduced at a dropping mercury electrode were established. The stability constants of the Mn(II) oxalate and sulfate complexes, as well as their diffusion coefficients, were determined at a constant ionic strength 0.5 mol⋅L−1 and 25 °C. The stabilities of these Mn(II) complexes were compared with the corresponding complexes of other divalent metal ions. The polarographic method was able to identify complexes that have not been established by other methods and to determine their stability constants with high accuracy.
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页码：247 / 260
页数：13
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