HYDRATES OF CERIUM(III) CHLORIDE

被引：12

作者：

REUTER, G ^{[1
]}

FINK, H ^{[1
]}

SEIFERT, HJ ^{[1
]}

机构：

[1] UNIV KASSEL,INST ANORGAN CHEM,ANORGAN CHEM ABT,HEINRICH PLETT STR 40,D-34109 KASSEL,GERMANY

来源：

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 1994年 / 620卷 / 04期

关键词：

CERIUM(III) CHLORIDE HYDRATES; SYNTHESIS; SOLUTION ENTHALPIES; CRYSTAL STRUCTURE;

D O I：

10.1002/zaac.19946200415

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The thermal dehydration of CeCl3 . 7 H2O to CeCl3 gives four definite intermediates: CeCl3 . 6 H2O, CeCl3 . 3 H2O, CeCl3 . 2 H2O, CeCl3 . H2O. In the hexahydrate monomeric [CeCl2(H2O)6]+ units exist. A structure analysis of CeCl3 . 3 H2O gave an orthorhombic unit cell (S.G. Pnma; Z = 4) with a = 1242.7(4) pm; b = 881.8(8) pm, c = 693.4(5) pm. The structure consists of [CeCl4/2Cl(H2O)3] chains, where two Ce3+ ions are connected via two chloride ions, forming bent chains in the [010] direction. The trihydrates LnCl3 . 3 H2O (Ln = Pr-Tb) are isotypic, also one modification of LaCl3 . 3 H2O. The structures of the di- and mono-hydrate are not yet known. Molar volumina and solution enthalpies in water vary linearly with the number of H2O molecules per formula unit.

引用

页码：665 / 671

页数：7

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