| 氯化铒与氨基酸配合物的稳定性研究 |
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| 引用本文： | 陈芳,胡珍珠. 氯化铒与氨基酸配合物的稳定性研究[J]. 河南科学, 2007, 25(3): 389-390 |
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| 作者姓名： | 陈芳 胡珍珠 |
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| 作者单位： | 湖北师范学院,化学与环境工程系,湖北,黄石,435002;湖北师范学院,化学与环境工程系,湖北,黄石,435002 |
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| 摘 要： | 用分光光度法测定了稀土铒盐与甘氨酸(Gly,)组氨酸(L-His,)脯氨酸(L-Pro)形成配合物的组成及平衡常数,从而研究了稀土氨基酸配合物的稳定性,并用DFT-B3LYP方法和6-31G(d,p)基组计算了氨基酸中相关原子的净电荷,结果表明,配合物的稳定性主要受配体空间位阻的影响.
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| 关 键 词： | 氯化铒 氨基酸 配合物 稳定性 |
| 文章编号： | 1004-3918(2007)03-0389-02 |
| 修稿时间： | 2006-12-08 |
Study on the Stability of Erbium Chloride Complexes with Amino-Acid |
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| CHEN Fang,HU Zhen-zhu. Study on the Stability of Erbium Chloride Complexes with Amino-Acid[J]. Henan Science, 2007, 25(3): 389-390 |
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| Authors: | CHEN Fang HU Zhen-zhu |
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| Affiliation: | Department of Chemistry and Environmental Engineering, Hubei Normal University, Huangshi 435002, China |
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| Abstract: | The compositions and the equilibrium constant of three amino-acid complexes were determined by spectrometric methods,and the equilibrium constants of reactions appear in the order KGly>KHis>KPro in H2O.The net charge at oxygen atom of amino-acid molecules was calculated by using DFT method at B3LYP/6-31G(d,p)level and the fully-optimized molecular.Experimental data and theoretical discussion showed that the stability of complex depends on steric hindrance of amino-acid molecules. |
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| Keywords: | Erbium Chloride amino-acid complex stability |
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