RECl_3与Gly间配合行为的半微量相平衡研究

Study on Semimicro Phase Equilibrium of Coordination Behaviour between RECl_3 and Glycine

测定了ＲＥＣｌ_３－Ｇｌｙ－Ｈ２_Ｏ（ＲＥ＝Ｓｍ，Ｄｙ，Ｙｂ）三元体系在２５℃时的溶度和饱和溶液折光率，绘制了相应的溶度图和饱和溶液折光率曲线。各体系的溶度曲线与折光率曲线均由四支组成，分别与ＲＥＣｌ_３·６Ｈ_２Ｏ，ＲＥ（Ｇｌｙ）Ｃｌ_３，２Ｈ_２Ｏ，ＲＥ（Ｇｌｙ）_３Ｃｌ_３·３Ｈ_２Ｏ和Ｇｌｙ相对应。制备了５个未见文献报道的化合物：ＲＥ（Ｇｌｙ）_３Ｃｌ_３·３Ｈ_２Ｏ（ＲＥ＝Ｃｅ，Ｐｒ，Ｎｄ，Ｓｍ，Ｄｙ），并用化学分析、元素分析、ＩＲ、ＦＳ、Ｘ－粉末衍射和ＴＧ－ＤＴＧ对其进行了表征。

The solubilities and refractive indexes of saturated solutions of the ternary systems ,RECl_3 Gly-H_2O (RE=Sm, Dy, Yb), at 25℃ have been studide and the corresponding equilibrium solubility diagrams and refractive index diagrams were constructed. All the solubility curves and refractive index curves of three systems consist of four branches,corresponding to RECl_3·6H_2O, RE (Gly)Cl_3· 2H_2O, RE (Gly)_3Cl_3· 3H_2O and Gly,respectively. Under guide of phase equilibrium results, five solid complexes, RE (Gly )_3·Cl_3·3H_2O (RE=Ce, Pr, Nd, Sm ,Dy),were synthesized. The complexes have not been repotred yet. These complexes have been characterized by chemical analysis ,elemental analysis, IR, UV,FS,X-ray powder diffraction and TG-DTG.