The matlockite-type praseodymium(III) oxide bromide PrOBr

被引：1

作者：

Talmon-Gros, Pia ^{[1
]}

Schurz, Christian M. ^{[1
]}

Schleid, Thomas ^{[1
]}

机构：

[1] Univ Stuttgart, Inst Anorgan Chem, D-70569 Stuttgart, Germany

来源：

ACTA CRYSTALLOGRAPHICA SECTION E-STRUCTURE REPORTS ONLINE | 2011年 / 67卷

关键词：

CRYSTAL-STRUCTURE; RARE-EARTH; HALIDES; NITRIDE;

D O I：

10.1107/S1600536811048227

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The crystal structure of the praseodymium(III) oxide bromide, PrOBr, can be best described with layers of agglomerated square antiprisms [PrO4Br4](9-). These slabs are stacked along the c axis and linked via two different secondary contacts between Pr3+ and Br-. The Pr3+ cations occupy the Wyckoff site 2c with 4mm symmetry and carry four O2- anions as well as four primary Br- anions, yielding a coordination number of 8. While the Br- anions exhibit the same site symmetry as the Pr3+ cations, the oxide anions are located at the Wyckoff position 2a with site symmetry (4) over bar m2 and have four Pr3+ cations as neighbours, defining a tetrahedron.

引用

页码：I74 / U1275

页数：9

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