Crystal structures of the compounds R3CuSiS7 (R = Ce, Pr, Nd, Sm, Tb, Dy and Er) and R3CuSiSe7 (R = La, Ce, Pr, Nd, Sm, Gd, Tb and Dy)

被引：24
|
作者：
Gulay, L. D.
Lychmanyuk, O. S.
Olekseyuk, I. D.
Daszkiewicz, M.
Stepien-Damm, J.
Pietraszko, A.
机构：
[1] Volyn State Univ, Dept Gen & Inorgan Chem, UA-43009 Lutsk, Ukraine
[2] Polish Acad Sci, W Trzebiatowski Inst Low Temp & Struct Res, PL-50950 Wroclaw, Poland
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2007年 / 431卷 / 1-2期
关键词：
chalcogenides; rare earth compounds; Cu compounds; Si compounds; S compounds; Se compounds; crystal structure; X-ray single crystal diffraction; X-ray powder diffraction;
D O I：
10.1016/j.jallcom.2006.05.090
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The crystal structures of the compounds R3CuSiS7 (R=Ce, Pr, Nd, Sm, Tb, Dy and Er) and R3CuSiSe7 (R=La, Ce, Pr, Nd, Sm, Gd, Tb and Dy) (La3CuSiS7 structure type, space group P6(3), Pearson symbol hP24) were determined by means of X-ray single crystal and powder diffraction. The R atoms are surrounded by distorted trigonal prisms. A triangular surrounding exists for the Cu atoms. A tetrahedral surrounding exists for the Si atoms. The S(Se)1 and S(Se)3 atoms are surrounded by tetrahedra also. Four cations surround every S(Se)2 atom. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：185 / 190
页数：6
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