镧和铕与邻菲罗啉谷氨酸配合物的NMR和IR研究

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。用核磁共振和红外光谱研究与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 AND IR STUDIES OF TERNARY COMPLEXES FOR La AND Eu WITH 1,10-PHENANTHROLINE AND L-GLUTAMIC ACID

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)37H2O(Ln=La, Eu) and Eu(Glu)3 12H2O.The coordination fashion of ligands and metal ions is studied by NMR and IR. The influence onNMR spectra by screening effect and paramagnetic character of rare earth ions are also discussed inthis 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. Thecoordination numbers of lanthanum and europium are five and three in ternary complex and in binarycomplex each. (Not including ligand of H2O in each complexes).