Thermodynamic and NMR studies of mixed-ligand complex formation of cadmium ethylenediaminetetraacetate with diamines in an aqueous solution

被引:0
作者
Pyreu Dmitrii
Kozlovskii Eugenii
Gruzdev Matvei
Kumeev Roman
机构
[1] Ivanovo State University,
[2] Institute of Solution Chemistry,undefined
来源
Journal of Thermal Analysis and Calorimetry | 2011年 / 103卷
关键词
Thermodynamic parameters; Mixed-ligand complex; Cadmium ethylenediaminetetraacetate; Hexamethylenediamine; Ethylenediamine; Denticity;
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摘要
The mixed-ligand complex formation in the systems Cd2 + Edta4–(CH2)n(NH2)2, n = 2 (En), 6 (L) has been NMR and calorimetrically studied in aqueous solution at 298.15 K and the ionic strength of I = 0.5 (KNO3). The thermodynamic parameters of formation of the CdEdtaL2−, CdEdtaHL−, (CdEdta)2L4−, and (CdEdta)2En4− complexes have been determined. The most probable coordination mode for the complexone and the diamine ligand in the mixed-ligand complexes was discussed.
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页码:1073 / 1077
页数:4
相关论文
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