| 溶液中混合配体化合物生成的极谱研究 Ⅰ、铅(Ⅱ)和以丙二酸根为初级配体,以乙酰丙酮、氨基乙酸根和乙二胺为次级配体的混合配体化合物 |
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| 引用本文： | 史讚,王朝敏,郑晓广. 溶液中混合配体化合物生成的极谱研究 Ⅰ、铅(Ⅱ)和以丙二酸根为初级配体,以乙酰丙酮、氨基乙酸根和乙二胺为次级配体的混合配体化合物[J]. 河南师范大学学报(自然科学版), 1987, 0(2) |
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| 作者姓名： | 史讚 王朝敏 郑晓广 |
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| 作者单位： | 河南师范大学化学系，河南师范大学化学系，河南师范大学化学系 86届毕业生 |
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| 摘 要： | 本文用极谱法研究了以丙二酸根(mal)为初级配体并分别以乙酰丙酮(acac)、氨基乙酸(gly)和乙二胺en)为次级配体的pb(Ⅱ)的1:1:1型混合配体化合物的稳定性,实验结果表明pb(Ⅱ-mal--acac体系的稳定性略低于统计效应的期望值,而其他两个体系则都高于期望值。对于统计效应的正偏离,按以下顺序下降:pb(Ⅱ)-mal-acac>pb(Ⅱ)-mal-gly>pb(Ⅱ)-mal-en。讨论了造成上列顺序的原因和混配化合物稳定性对配体的依赖关系。
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| 关 键 词： | 混合 配位体 络合物 极谱 |
A POLAROGRAPHIC STUDY OF MIXED—LIGAND COMPLEX FORMATION IN SOLUTION——Ⅰ.Mixed Ligand Complers of Lead(Ⅱ)with Malonate as First Ligand and Acetylacetone,Glycine ar Ethylenediamine as Second Ligand |
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| Shi Zan Wang Chaomin Zheng Xiaoguang. A POLAROGRAPHIC STUDY OF MIXED—LIGAND COMPLEX FORMATION IN SOLUTION——Ⅰ.Mixed Ligand Complers of Lead(Ⅱ)with Malonate as First Ligand and Acetylacetone,Glycine ar Ethylenediamine as Second Ligand[J]. Journal of Henan Normal University(Natural Science), 1987, 0(2) |
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| Authors: | Shi Zan Wang Chaomin Zheng Xiaoguang |
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| Affiliation: | Department of Chemistry |
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| Abstract: | The stabilities of 1: 1: 1 mixed Ligand complexes of pb(Ⅱ)with malonate(mal)as first Ligand and acetylacatone(acac), glycine (gly) or ethylenediamine(en)as second Ligand are studied by polarographical method. The stability constant of Pb(Ⅱ)-mal-acac system is slightly smaller than the value expected by statistical effect, but the others are larger than the expected values. The positive deviation from statistical effect is in the following order: pb(Ⅱ)-mal-en>Pb(Ⅱ)-mal-gly>pb(Ⅱ)-mal-acac. The reasons for the above order and stability of mixed Ligand complex depandence on Ligand are discussed. |
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| Keywords: | Mixed Ligand Complex Polarograph |
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