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测定了三元体系LaY3－BAPHDCA－H2O（Y＝NO3，Cl－）在30℃时的溶解度及饱和溶液的折光指数，绘制了相应的溶度图和饱和溶液的折光指数图．硝酸盐体系的溶度曲线和饱和溶液的折光指数曲线均由三支组成，分别与BAPHDCA、La（BAPHDCA）（NO3）3·4H2O和La（NO3）3·6H2O相对应．其中配体与硝酸盐形成了不一致溶解的新化合物，并对其进行了化学分析及组成分析、X射线粉末衍射分析、热分析和红外光谱分析．氯化物体系为一简单体系．
The solubility of the ternary system LaY3-BAPHDCA-H2O (Y = NO3, Cl-) at 30 ℃ and the refractive index of the saturated solution were measured. The corresponding solubility diagrams and the refractive index of the saturated solution were plotted. The solubility curve of nitrate system and the refractive index curve of saturated solution are composed of three branches, corresponding to BAPHDCA, La (BAPHDCA) (NO3) 3 · 4H2O and La (NO3) 3 · 6H2O respectively. Among them, the ligand and nitrate formed a new compound which was dissolved inconsistently, and its chemical analysis and composition analysis, X-ray powder diffraction analysis, thermal analysis and infrared spectroscopy were carried out. Chloride system is a simple system.