CRYSTAL-GROWTH AND STRUCTURAL STUDY OF THE NEW SERIES Y(OH)CRO4, DY-LU(OH)CRO4 - CRYSTAL-STRUCTURE OF ER(OH)CRO4

被引：9
|
作者：
BUENO, I
PARADA, C
MONGE, A
VALERO, CR
机构：
[1] CSIC,ITO MAT,E-28006 MADRID,SPAIN
[2] UNIV COMPLUTENSE,FAC CIENCIAS QUIM,DIFRACC RAYOS X LAB,E-28040 MADRID,SPAIN
来源：
JOURNAL OF SOLID STATE CHEMISTRY | 1991年 / 90卷 / 02期
关键词：
D O I：
10.1016/0022-4596(91)90141-4
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Single crystals of the new series Ln(OH)CrO4 (Ln = Y, DyLu) have been obtained by hydrothermal procedures. The structure of Er(OH)CrO4 has been determined by single-crystal X-ray techniques. The compound has monoclinic symmetry, space group P21 n, Z = 8, with a = 8.106(3), b = 11.324(2), c = 8.251(1) Å, β = 94.14(2)° and V = 755.4(3) Å3. Final R values were R = 0.034, Rw = 0.049, for 2207 observed reflections. X-ray powder data show that all compounds of the title series are isomorphous. The coordination polyhedron of the lanthanide cations can be considered a square antiprism, with hydrogen bonds linking CrO4 and LnO8 groups. The X-ray data in this series provide evidence for the lanthanide contraction. © 1991.
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页码：263 / 269
页数：7
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