| RE(Ala)4(Im)(ClO4)3*2H2O固体配合物的合成及其红外光谱研究 |
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| 引用本文： | 李瑞萍,范琼芳,郭建雄.RE(Ala)4(Im)(ClO4)3*2H2O固体配合物的合成及其红外光谱研究[J].光谱学与光谱分析,2003,23(2). |
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| 作者姓名： | 李瑞萍 范琼芳 郭建雄 |
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| 作者单位： | 三峡大学化学与生命科学学院,湖北,宜昌,443000 |
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| 摘 要： | 本文通过稀土高氯酸盐与L-丙氨酸(L-Ala)及咪唑(Im)反应,合成了标题配合物RE(Ala)_4(Im)(ClO_4)_3·2H_2O(RE=Pr,Nd,Sm),测定了配合物的红外光谱,对其主要吸收带进行了归属。红外光谱的研究结果表明,丙氨酸以内盐的形式存在于配合物中,通过羧基与稀土离子配位,且随着RE原子量的增大,羧基与RE~(3 )间配位键离子性逐渐减弱,共价性逐渐增大;咪唑环上的N参与了配位。
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| 关 键 词： | 稀土高氯酸盐 L-丙氨酸 咪唑 配合物 |
Synthesis of Ternary Complexes of Rare Earth Perchlorate with L-Alanine and Imidazale and the Infrared Spectral Study |
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| LI Rui-ping,FAN Qiong-fang and GUO Jian-xiong
Chemistry and Life Science College,China Three Gorges University,Yichang ,China.Synthesis of Ternary Complexes of Rare Earth Perchlorate with L-Alanine and Imidazale and the Infrared Spectral Study[J].Spectroscopy and Spectral Analysis,2003,23(2). |
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| Authors: | LI Rui-ping FAN Qiong-fang and GUO Jian-xiong
Chemistry and Life Science College China Three Gorges University Yichang China |
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| Institution: | LI Rui-ping,FAN Qiong-fang and GUO Jian-xiong
Chemistry and Life Science College,China Three Gorges University,Yichang 443000,China |
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| Abstract: | The title complexes RE(Ala)4(Im)(ClO4 )3.2H2O (RE = Sm, Pr or Nd) were synthesized by the reaction of rare earth perchlorates with alanine and imidazale in aqueous solution. The infrared spectra of the complexes were measured and their principal IR bands were assigned. The results show that alanine molecules are zwitterions in the complexes and coordinate with rare earth ions through carboxyl groups, and with the atomic weight of rare earth increasing, the ionization of the coordinate band decreases, while the covalence increases. Imidazale was found to coordinate with rare earth by nitrogen atom. |
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| Keywords: | Rare earth Perchlorate L-Alanine Imidazale Complex |
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