| 镧系元素—1—氨基乙酸—1,10—二氮杂菲固态三元配合物的合成及表征 |
| SYNTHESIS AND CHARACTERIZATION OF Ln(Ⅲ)-GLYCINE-1,10-PHENA-THROLINE TERNARY CHELATES |
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| 摘要: 本文报道了镧系离子Ln(Ⅱ)与1-氨基乙酸及1,10-二氮杂菲反应所形成的固态三元配合物,考察了这类配合物的红外光谱,荧光光谱,热谱。比较了X-射线粉末衍射及元素分析数据。确定该类配合物的组成为Ln·(Gly)·(phen)2·H2O(Gly为1-氨基乙酸,phen为1,10-二氮杂菲)。 |
| 关键词: 镧系配合物 |
| 基金项目: |
| Abstract: Ln(Ⅲ)-Glycine(Gly)-1,10-Phenathroline(phen) ternary chelates are synthesized and characterized by elementary analysis, infrared spectra, fluorescence spectra, thermal analysis and X-ray powder diffraction, where Lu=La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu. The elementary analysis indicates a 1:3:2 metal to Gly and phen stoichiometry with a formula Ln(Gly)3·(phen)2(H2Q) in all the ternary chelates. The chelates are soluble in water, slightly soluble in ethanol and acetone and insoluble in other common solvents. Infrared spectra show that phen coordinate to Ln with two nitrogen atoms. But the Ln-COO- bond is ionic naturally. The peaks in the region 300 to 320 cm-1 are assigned to N-Ln stretching mode. When Gly and phen coordinate to metal ion, the fluorescence spectra are changed very much, and all the changes support the conclusion that new ternary chelates are formed. The thermal analysis data illustrate that the ternary chelates decompose before the melting-point. X-ray powder diffraction of Gly, phen, Pr (Gly)3(phen)2(H2O), Pr(Gly)3xH2O and Pr(phen)2 make clear that all of them are crystals. But the ternary chelates have a new structure pattern, which not only different from the ligands or the binary chelates but also different from the sum of the ligands and the binary chelates. |
| Keywords: lanthanide chelate |
| 投稿时间：1987-02-03 |
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| 白光弼,陈广德,王喆明,袁莉,康致万,高锦章.镧系元素—1—氨基乙酸—1,10—二氮杂菲固态三元配合物的合成及表征[J].无机化学学报,1988,4(2):32-41. |
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