Cu(NO_3)_2(La(NO_3)_3)-CO(NH_2)_2-H_2O三元体系的等温溶度研究

STUDY ON THE ISOTHERMAL SOLUBILITY OF THE TERNARY SYSTEMS Cu(NO_3)_2(La(NO_3)_3)-CO(NH_2)_2-H_2O

本文首次报道三元体系Ｃｕ（ＮＯ３）２－ＣＯ（ＮＨ２）２－Ｈ２Ｏ（３０℃）和Ｌａ（ＮＯ３）３－ＣＯ（ＮＨ２）２－Ｈ２Ｏ（２５℃）的等温溶度及饱和溶液、折光率，绘制相应的溶度图及折光率－组成图。体系中发现有组成为Ｃｕ（ＮＯ３）２·４ＣＯ（ＮＨ２）２、Ｌａ（ＮＯ３）３·２ＣＯ（ＮＨ２）２·３Ｈ２Ｏ、Ｌａ（ＮＯ３）３·４ＣＯ（ＮＨ２）２·Ｈ２Ｏ和Ｌａ（ＮＯ３）３·６ＣＯ（ＮＨ２）２ 的４ 个新化合物相，且均为同成分溶解的化合物。通过元素分析、红外光谱分析、Ｘ－射线粉末衍射。

The isothermal solubilities of the ternary systems Cu(NO 3) 2 CO(NH 2) 2 H 2O (30℃) and La(NO 3) 3 CO(NH 2) 2 H 2O (25℃) have been studies. There are 4 new compounds Cu(NO 3) 2·4CO(NH 2) 2、 La(NO 3) 3·2CO(NH 2) 2·3H 2O、 La(NO 3) 3·4CO(NH 2) 2·H 2O and La(NO 3) 3·6CO(NH 2) 2 found in the systems, which are congruently to dissolve in water at room temperature. These compounds have been characterized by IR, X ray and TGA.$$$$