Crystal structure of LaBSiO5

被引：24

作者：

Chi, LS ^{[1
]}

Chen, HY ^{[1
]}

Zhuang, HH ^{[1
]}

Huang, JS ^{[1
]}

机构：

[1] CHINESE ACAD SCI,FUJIAN INST RES STRUCT MATTER,STATE KEY LAB STRUCT CHEM,FUZHOU 350002,PEOPLES R CHINA

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1997年 / 252卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

crystal structure; stillwellite; ran earth borosilicate;

D O I：

10.1016/S0925-8388(96)02625-4

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 lanthanum borosilicate LaBSiO5 crystallizes in the trigonal system, space group P3(1), cell dimensions a=b=6.874(1), c = 6.717(3)Angstrom, Z = 3, V= 274.9(1)Angstrom(3), final agreement factors R = 0.017, R-w = 0.022. The structure was determined from single crystal X-ray diffraction data, isostructural with CeBSiO5 previously reported. Two BO4 tetrahedra and one SiO4 tetrahedron are interlinked by corner-sharing with each other to form a six-membered ring system that constructs the infinite helical chain parallel to the 3(1) axis, of which the two nearest six-membered rings share a common B atom. The coordination polyhedra of the rare earth atoms with nine vertices are connected through edge-sharing with each other to form a three-dimensional framework.

引用

页码：L12 / L15

页数：4

共 8 条

[1]

ANDREW JM, 1955, NATURE, V176, P509

[2] THE OPTICAL-PROPERTIES OF EU3+ EMBEDDED IN THE RARE-EARTH BOROGERMANATE MATRIX - REBGEO5 [J].