Layered ordering of vacancies of lead iron phosphate Pb3Fe2(PO4)4

被引：8

作者：

Malakho, AR

Morozov, VA ^{[1
]}

Pokholok, KV

Lazoryak, BI

Van Tendeloo, G

机构：

[1] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119899, Russia

[2] Moscow MV Lomonosov State Univ, Dept Mat Sci, Moscow 119899, Russia

[3] Univ Antwerp, EMAT, B-2020 Antwerp, Belgium

来源：

SOLID STATE SCIENCES | 2005年 / 7卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

phosphates; vacancies; X-ray powder diffraction; electron diffraction; crystal structure;

D O I：

10.1016/j.solidstatesciences.2005.01.007

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Lead iron phosphate Pb3Fe2(PO4)(4) has been synthesized by solid state method and characterized by X-ray powder and electron diffraction, differential scanning calorimetry, Mossbauer and infrared spectroscopy. A structural model for Pb3Fe2(PO4)(4) is proposed and is refined by the Rietveld method. The compound crystallizes in the monoclinic space group P2(1)/c with a = 9.0065 (6) angstrom, b = 9.0574(6) angstrom, c 9.3057(6) angstrom, beta = 116.880(4)degrees, V = 677.10(8) angstrom(3), Z = 2, R-wp = 3.52%, R-p = 2.66%. It exhibits a structure with a three-dimensional open framework. The 3D framework is formed by PO4 tetrahedra and FeO6 octahedra connected via common vertices. 3/4 of cavities in the framework are occupied by lead and 1/4 are vacant. (c) 2005 Elsevier SAS. All fights reserved.

引用

页码：397 / 404

页数：8

共 13 条

[1]

Belokoneva EL, 1998, RUSS J INORG CHEM+, V43, P1915

[2] Lead(II) diiron(III) pyrophosphate and barium diiron(III) pyrophosphate [J].