| 三水合希土氯化物(镨、钆)与18－冠－6配合物的热化学研究 |
| STUDY ON THERMOCHEMISTRY OF COMPLEXES OF TRIHYDRATED RARE EARTH(Pr, Gd)WITH18-CROWN-6 |
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| 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. |
| 关键词: 希土氯化物 冠醚 配合物 标准生成焓 |
| 基金项目: |
| Abstract: The 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. |
| Keywords: rare earth chloride crown ether complex standard molarenthalpy of formation |
| 投稿时间：1995-01-14 |
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| 薛岗林,徐宏,任德厚,张泉珍,宋迪生.三水合希土氯化物(镨、钆)与18－冠－6配合物的热化学研究[J].无机化学学报,1995,11(4):415-418. |
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