Single Crystal Structure of the Divalent Europium Chloroapatite Eu5(PO4)3Cl

被引：2

作者：

Yahia, Hamdi Ben ^{[1
]}

Rodewald, Ute Ch. ^{[1
]}

Poettgen, Rainer ^{[1
]}

机构：

[1] Univ Munster, Inst Anorgan & Analyt Chem, D-48149 Munster, Germany

来源：

ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES | 2009年 / 64卷 / 05期

关键词：

Oxophosphate; Europium Compound; Crystal Structure; Apatite; BOND-VALENCE PARAMETERS; APATITES; OXIDES; SUPERCONDUCTOR; CHEMISTRY; RADII;

D O I：

10.1515/znb-2009-0515

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The chloroapatite Eu-5(PO4)(3)Cl has been synthesized by it solid-state reaction route using a salt flux. Its structure has been solved and refined from single crystal X-ray data: apatite type, P6(3)/m, a = 988.36(4), c = 720.32(3) pm, Z = 2, R(F) = 0.021 and wR(F-2) = 0.063 for 749 unique reflections and 40 variables. The Eu-5(PO4)(3)Cl structure contains isolated (PO4)(3-) tetrahedra and two crystallographically independent divalent europium sites. The Eu1(2+) ion at the 4f position is located in a distorted tri-capped trigonal prism whereas the Eu2(2+) ion at the 6h position is located in a strongly distorted square anti-prism. The chloride ions have octahedral europium coordination (307 pm Eu-Cl).

引用

页码：577 / 580

页数：4

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