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本文用氯化稀土(RECl_3)与二茂铁丙烯酸钠盐(LNa)在无水乙醇中反应,合成了13种新的稀土配合物。由元素分析、红外光谱和热谱分析确定配合物的组成为:(C_5H_5FeC_5H_4CH=CHCOO)_3RE·H_O(RE=La,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm,Yb),配体羧基以双齿对称螯合方式与稀土离子配位。经X射线粉末衍射分析,对其晶体结构进行了初步探讨。
In this paper, 13 new rare earth complexes were synthesized by the reaction of rare earth chloride (RECl_3) with ferric acrylate sodium salt (LNa) in absolute ethanol. The composition of the complex was determined by elemental analysis, infrared spectroscopy and thermogravimetric analysis as follows: (C_5H_5FeC_5H_4CH = CHCOO) _3RE · H_O (RE = La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb). The carboxyl of ligand is coordinated with the rare earth ions by bidentate symmetric chelation. By X-ray powder diffraction analysis, the crystal structure of a preliminary study.