LaBr_3·3H_2O与冠醚18C6在乙腈中配合行为的相平衡及配合物的合成与表征

Study of Complex behavior of LaBr 3·3H 2O with 18Crown6 in CH 3CN by Phase Equilibrium and Synthesis/Characterization of the Complexes

采用半微量相平衡方法研究了三元体系ＬａＢｒ３·３Ｈ２Ｏ－１８Ｃ６－ＣＨ３ＣＮ在２５０Ｃ时的溶解度，测定了各饱和溶液的折光率．该体系在２５℃仅生成一种化学计量的配合物，组成为ＬａＢｒ３·１８Ｃ６·３Ｈ２Ｏ．制备了固态配合物，用化学分析、ＩＲ光谱、电导。

Solubility of ternary system LaBr 3·3H 2O 18C6 CH 3CN at 298 K was studied by means of semimicro phase equilibrium,and the refrangibility of the saturated solutions was measured.Only a stoichiometric complex formed in the system at 298k,with a composition of LaBr 3·18C6·3H 2O. The complex in solid state was prepared and its composition and properties were inves tigated by using methods of chemical analysis,IR,conductivity,DTG and TG.