4-ClCH_2COAP-La(NO_3)_3-H_2O和4-ClCH_2COAP-LaCl_3-H_2O三元体系30℃时溶度测定  

Solubility Measurement of the Ternary Systems 4-ClCH_2COAP-La (NO_3)_3-H_2O and 4-ClCH_2COAP-LaCl_3-H_2O (30℃)

作　　者：徐兴玲[1] 唐宗薰[1] 郭志箴[1] 陈运生[1] 

机构地区：[1]西北大学化学系,西安710069

出　　处：《高等学校化学学报》1991年第6期728-730,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金

摘　　要：安替比林及其4位取代衍生物是较强的配位剂,可与不同的稀土盐作用生成组成各不相同的配合物,为了进一步探讨安替比林的衍生物对稀土离子的配位作用,我们研究了以4-一氯乙酰基安替比林(4-ClCH_2COAP)为配体与硝酸镧或氧化镧的三元水盐体系。 1 试剂 LaY_3·nH_2O(Y,n;=NO_3^-,6;Cl^-,7):一定量的La_2O_3逐渐加入稍过量的1∶1的HY酸溶液中,搅拌反应,水浴上蒸发浓缩,冷却,加晶种结晶,抽滤,晶体用蒸馏水重结晶后于干燥器中干燥,经分析符合组成。The solubilities and the refractive indexes of saturated solutions of the ternary systems 4C1CH_2COAP-LaY_3-H_2O(Y=NO_3^-, Cl^-) at 30℃ were studied and the corresponding equilibrium diagrams were constructed. The solubility curves and refractive index curves of nitrate systems consist of three branches, corresponding to 4-ClCH_2COAP, La(4-ClCH_2COAP)_2(NO_3)_3 and La(NO_3)_3·6H_2O. The ternary complex is incongruently soluble in water. The eutectic compositions are: La(NO_3)_3 49.80%, 4-ClCH_2COAP 0. 85% and La(NO_3)_3 60.63%, 4-C1CH_2COAP 0.56%. The system of chloride is a simple one. The eutectic composition is LaCl_3 48.39％, 4-C1CH_2COAP 0.28%. The IR spectra and the X-ray powder diffraction of the ternary complex were studied too.

关 键 词：安替比林 稀土络合物 三元体系 

分 类 号：O642.54[理学—物理化学]