Crystal structures and sodium/silver distributions within the ionic conductors Na5Ag2Fe3(As2O7)4 and Na2Ag5Fe3(P2O7)4

被引：6

作者：

Quarez, Eric ^{[1
]}

Mentre, Olivier ^{[2
]}

Djellab, Karim ^{[1
]}

Masquelier, Christian ^{[1
]}

机构：

[1] Univ Picardie Jules Verne, CNRS, Lab Reactivite & Chim Solides, UMR 6007, F-80039 Amiens, France

[2] ENSC Lille UST Lille, CNRS, Equipe Chim Solide, UCCS,UMR 8181, F-59652 Villeneuve Dascq, France

来源：

NEW JOURNAL OF CHEMISTRY | 2010年 / 34卷 / 02期

关键词：

CONDUCTIVITY; SODIUM; FE; PHOSPHATES; ELECTRODE; GA; CR; NATI2(PO4)3; FAMILY; M=AL;

D O I：

10.1039/b9nj00355j

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The crystal structures of new Na5Ag2Fe3(As2O7)(4) and Na2Ag5Fe3(P2O7)(4) compounds, prepared through ion exchange from Na7Fe3(X2O7)(4) (X = P, As) are reported. They crystallize in the monoclinic C2/c space group and exhibit a Na/Ag ordering on cooling. Crystal structures were determined from single crystal X-ray diffraction at 100 and 298 K for each composition. The structure consists of FeO6 octahedra sharing their corners with X2O7 dimers (X = P, As) to form a three-dimensional framework [Fe-3(X2O7)(4)](7-) into which the sodium/silver ions are located. The differences between the four structures lie on the distribution of the sodium/silver ions within this framework giving a developed insight of the ionic diffusion paths.

引用

页码：287 / 293

页数：7

共 28 条

[1] CRYSTAL-CHEMISTRY OF THE NAZR2(PO4)3, NZP OR CTP, STRUCTURE FAMILY [J].