波谱学杂志 ›› 1997, Vol. 14 ›› Issue (6): 533-537.

• 研究论文 • 上一篇    下一篇

镧和铕与邻菲罗啉谷氨酸配合物的NMR和IR研究

杨秋青1, 李林书2, 朱智甲1   

  1. 1 河北师范大学实验中心, 石家庄 050016;
    2 河北师范大学化学系, 石家庄 050016
  • 收稿日期:1997-04-14 修回日期:1997-07-07 出版日期:1997-12-05 发布日期:2018-01-22
  • 作者简介:杨秋青,女,36岁,本科,高工

NMR AND IR STUDIES OF TERNARY COMPLEXES FOR La AND Eu WITH 1,10-PHENANTHROLINE AND L-GLUTAMIC ACID

Yang Qiuqing1, Lj Linshu2, Zhu Zhijia1   

  1. 1 Experiment Center, Hebei Normal University, Shijiazhuang 050016;
    2 Department of Chemistry, Hebei Normal University, Shijiazhuang 050016
  • Received:1997-04-14 Revised:1997-07-07 Online:1997-12-05 Published:2018-01-22

摘要: 合成了稀土镧和铕与谷氨酸、邻菲罗啉形成的二元及三元配合物,经元素分析确定该配合物的组成为Ln (phen)(Glu)3·7H2O (Ln=La,Eu);Eu (Glu)3·12H2O.用核磁共振(NMR)和红外光谱(IR)研究了配体与稀土离子的配位方式,讨论了稀土离子的顺磁性及屏蔽效应对配合物的NMR谱图的影响.NMR和IR研究表明,镧和铕配合物具有相同的对称结构和不同的化学位移变化规律,谷氨酸和邻菲罗啉分别为单齿和双齿配位,三种配合物中,镧和铕的三元配合物的配位数均为5,铕的二元配位数为3(均未包括配位水分子数).

关键词: 镧, 铕, 谷氨酸, 邻菲罗啉, NMR, IR

Abstract: The binary and ternary complexes of rare earth La and Eu with 1,10-phenanthroline and L-glutamic acid are synthesized. Their compositions confirmed by elemental analysis are Ln(phen)(Glu)3·7H2O(Ln=La, Eu) and Eu(Glu)3·12H2O.
The coordination fashion of ligands and metal ions is studied by NMR and IR. The influence on NMR spectra by screening effect and paramagnetic character of rare earth ions are also discussed in this paper.
The NMR studies show that La and Eu complexes have similar symmetric construction and irregular changes of chemical shifts. Glu and phen are simple dentate and bidentate ligand respectively. The coordination numbers of lanthanum and europium are five and three in ternary complex and in binary complex each. (Not including ligand of H2O in each complexes).

Key words: La, Eu, Glu, Phen, NMR, IR