| Cd(Ⅱ)—正己烷基亚氨二乙酸根离子—氯离子的混配型配合物的研究 |
| STUDY ON MIXED LIGAND COORDINATION COMPOUNDS OF Gd(Ⅱ)-n-HEXYL IMINODIACETATE-CHLORIDE |
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| 摘要: 本文提出了一种强酸盐和标准碱两种溶液同时滴定的pH电位法,以简化金属离子—有机配体—强酸根离子体系的混配型配合物的研究方法.根据该实验方法,推导出在不生成酸式及多核配合物情况下混配型配合物稳定常数的计算公式. 研究了Cd(Ⅱ)—正己烷基亚氨二乙酸根离子(A)—氯离子(Cl)体系的配位平衡,在所研究范围内形成CdACl、CdACl2,在25±0.1℃,μ=1.0的条件下,测得lgβ11=7.60,lgβ12=8.12. 讨论了两种溶液滴定法的优缺点及适用范围.该法具有快速、准确、仪器设备简单等特点. |
| 关键词: 混配型配合物 氯 正己烷基亚氨二乙酸 镉 |
| 基金项目: |
| Abstract: A pH potentiometric method has been proposed to study mixed ligand coordination compounds in the system of rnetal ion-organic ligand-anion of a strong acid. This method is based on simultamious titration with the solution of a strong acid salt and a standard base.In the light of experimental method, the formulas have been derived for calculating formation constants in the system where no polynuclear and protonated coordination compounds are formed.The coordination equilibrum of Cd(I)-n-hexyl iminodiacetate(A)-chloride(Cl)system has been studied. CdACl and CdAC12 are formed under the experimental conditions. The values of lgβ11 and lgβ12 were found to be 7.60 and 8.12 respectively at 25±0.1℃ and μ=1.0The advantages and disadvantages of the method have been discussed. |
| Keywords: mixed ligand complex chloride n-hexyl iminodiacetate cadmium |
| 投稿时间：1986-03-17 |
| 摘要点击次数: 1536 |
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| 杨天足,陈超球,张祥麟.Cd(Ⅱ)—正己烷基亚氨二乙酸根离子—氯离子的混配型配合物的研究[J].无机化学学报,1987,3(2):63-71. |
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