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利用改进的半微量相平衡方法研究了Y(NO_3)_3·3H_2O-18C6-C_2H_5NH(18C_6为18-冠-6)体系在25℃时溶解度,测定了各流相的折光率。结果指出只有一种化学计量的配合物[Y(NO_3)_3·18C6·3H_2O·C_2H_5OH]生成。考查了在相平衡过程中水的行为。经分离、洗涤、浓硫酸干燥器中恒重后,通过化学分析,确定了配合物的组成为:Y(NO_3)_3·18C6·3H_2O。用红外光谱、差热-热重分析研究了配合物的性质。并在常量情况下,研究了配合物的热失重情况。
The solubility of Y (NO_3) _3 · 3H_2O-18C6-C_2H_5NH (18C_6 to 18-crown-6) system at 25 ℃ was studied by the improved semi-micro phase equilibrium method. The refractive index of each phase was measured. The results indicate that only one stoichiometric complex [Y (NO 3) 3 · 18C 6 · 3H 2 O · C 2 H 5 OH] is generated. Examined the behavior of water during phase equilibrium. After separation, washing, constant weight sulfuric acid dryer, by chemical analysis, the composition of the complex was determined as: Y (NO_3) _3 · 18C6 · 3H_2O. The properties of the complexes were investigated by FTIR, TG-DTA. Under constant conditions, the thermogravimetric conditions of the complexes were studied.