摘要
制备了ＲＥＣｌ３·３Ｈ２Ｏ（ＲＥ＝Ｐｒ、Ｇｄ）与１８Ｃ６的固态配合物，其化学组成为：ＲＥＣｌ３·１８Ｃ６·３Ｈ２Ｏ．对其进行了ＩＲ、溶解度、ＤＴＧ和ＴＧ分析．推测了热分解机理．测量了２９８．１５Ｋ时１８Ｃ６及两种配合物在无水乙醇中的积分溶解热，以及ＲＥＣｌ３·３Ｈ２Ｏ在１８Ｃ６－Ｃ２Ｈ５ＯＨ溶液中的溶解配位热效应．依据本文所设计的热化学循环，求得了ＲＥＣｌ３·３Ｈ２Ｏ（ｓ）与１８Ｃ６（Ｓ）生成ＲＥＣｌ３·１８Ｃ６·３Ｈ２Ｏ（Ｓ）的反应热及两种配合物的标准生成焓．
he solid coordination compounds of RECl3·3H2O (RE=Pr, Gd) with 18C6 have been prepared in C2H5OH, their chemical composition is: RECl3. 18C6. 3H2O. The propertics of the complexes have been investigated by IR, solubility, DTG and TG. The thermal dccomposition processes of the complexes have been proposed. The integral heats of solution of RECl3·18C6·3H2O in C2H5OH, 18C6 in C2H5OH, and the heats of solution and coordination of RECl3·3H2O in 18C6-C2H5OH solution have been measured calorimctrically at 298.15K. By means of a thermochcmical cycle suggested in this paper, the reaction heat of RECl3·3H2O(s)with 18C6(s), forming RECl3·18C6·3H2O(s), and the standard molar enthalpics of formation for the two comnlcxcs were obtained.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
1995年第4期415-418,共4页
Chinese Journal of Inorganic Chemistry
关键词
冠醚
配合物
标准生成焓
镨
钆
稀土氯化物
rare earth chloride
crown ether
complex standard molarenthalpy of formation
