| Yb(Cl4)3·3H2O-18C6-C2H5OH体系(25℃)的相化学研究及固态配合物的合成与性质 |
| Studies on Phase Chemistry of Yb(ClO4)3·3H2O-18C6-C2H5OH System at 25℃ and Synthesis Characterization of Solid Complexes |
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| 摘要: |
| 关键词: 高氯酸钇 配合物 冠醚18C6 三元体系 相平衡 |
| 基金项目: |
| Abstract: The solubilities of Yb(ClO4)3·3H2O-18C6-C2H5OH ternary system at 25 were invstigated by a semimicro method for study of phase equilibrium.and the refractive indexes of saturated solutions were determined.The behavior of water in this system during the equilibrium was examined.The results indicate that there are two kinds of complexes formed in the system, their chemical compositions are: Yb(ClO4)3·18C6·3H2O·2C2H5OH (I) and Yb(ClO4)3 18C6·3H2O·C2H5OH.Both are incongruently soluble in EtOH.The influences of rare earth ions and salt anions on formation of complexes were discussed.The two solid complexes have been prepared, and their composihons and properties have been investigated by chemical analysis, IR, DTG and DSC.According to the DSC, the enthalpies of some steps during the decomposition have been obtained for complexes (Ⅲ)and (Ⅳ). |
| Keywords: ytterbium perchlorate complex crown ether18C6 ternary systems phase equilibrium |
| 投稿时间：1999-12-07 修订日期：2000-04-20 |
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| 李谦定,刘祥,畅柱国,任德厚.Yb(Cl4)3·3H2O-18C6-C2H5OH体系(25℃)的相化学研究及固态配合物的合成与性质[J].无机化学学报,2000,16(5):805-810. |
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