三元体系Ln(ClO_4)_3—4-ClCH_2COAp-H_2O(30℃)的相平衡研究(Ln=La,Sm,Er)

Study on the Ternary System of La(ClO_4)_3—4-ClCH_2COAp—H_2O at 30℃(Ln=La,Sm,Er)

我们测定了三元体系 Ln(ClO_4)_3—4-ClCH_2COA_p—H_2O(Ln=La,Sm,Er)存30℃时的溶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曲线图.体系的溶度曲线和折光指数曲线均由四支组成,分别与4-ClCH_2COA_p、Ln(4-ClCH_2COAp)_3(ClO_4)_3·nH_2O(Ln=La,n=7;Sm,8;Er,4)、Ln(4-ClCH_2COAp)_2(ClO_4)_3·nH_2O(Ln=La,n=7;Sm,6;Er,4)和 Ln(ClO_4)_3·nH_2O(Ln=La,n=8;Sm,9;Er,6)相对应,两类配合物均为固液异组成化合物.

The solubilities and the refractive indexes of saturated solutions of the title systemsat 30℃ have been studied and the correspounding equilibrium diagrams were contructed.All the solubility curves and refractive index ourves of these systems are consisting offour branches,correspounding to 4-ClCH_2COAp,Ln(4-ClCH_2COAp)_3(ClO_4)_3·nH_2O(Ln=La,n=7;Sm,8;Er,4),Ln(4-ClCH_2COAp)_3(ClO_4)_3·nH_2O(Ln=La,n=7;Sm,6;Er,4),and Ln(ClO_4)_3·nH_2O(Ln=La,n=8;Sm,9;Er,6)respectively.Bothkinds of complexes are incongruity soluble in water.