RE（Met）（NO3）3·H2O（RE＝Er，Yb，Y）固体配合物的研究

Solid complexes of rare earth nitrates with methionine

水相中制得三个硝酸稀土盐与蛋氨酸的配合物．通过化学分析、元素分析、摩尔电导、红外分析、紫外光谱、ＴＧ－ＤＴＧ及Ｘ－射线粉末衍射等方法研究了这些配合物的一些物理和化学性质．确定其通式为ＲＥ（Ｍｅｔ）（ＮＯ３）３·Ｈ２Ｏ（ＲＥ＝Ｅｒ，Ｙｂ，Ｙ；Ｍｅｔ＝ＤＬ－α－Ｍｅｔｈｉｏｎｉｎｅ）

The three complexes of rare earth nitrates with methionine in aqueous media are prepared, and the general formula of complexes is RE(Met)(NO 3) 3·H 2O(RE=Er,Yb,Y;Met=Methionine). Some physical and chemical properities of these compounds have been studied by the methods of chemical analyses, elemental analyses, molar conductivity, IR spectra, UV spectra, TG GTG and X ray powder diffraction .