STRUCTURE AND OXYGEN STOICHIOMETRY IN SR3FE2O7-Y'0-LESS-THAN-OR-EQUAL-TO-Y-LESS-THAN-OR-EQUAL-TO-1.0

被引：139

作者：

DANN, SE ^{[1
]}

WELLER, MT ^{[1
]}

CURRIE, DB ^{[1
]}

机构：

[1] UNIV SOUTHAMPTON,DEPT CHEM,SOUTHAMPTON SO9 5NH,HANTS,ENGLAND

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1992年 / 97卷 / 01期

关键词：

D O I：

10.1016/0022-4596(92)90023-O

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Powder neutron diffraction has been used to determine the structure of four compounds from the series Sr3Fe2O7-y, y = 0, 0.25, 0.42, and 1.0. All these compounds crystallize with structures based on that of Sr3Ti2O7 with oxygen systematically removed from a site linking the FeO6 octahedra together. Complete removal of oxygen from this site produces an unusual, square-pyramidal coordination around each iron(III) ion and a stoichiometry of Sr3Fe2O6; this compound is isostructural with La2SrCu2O6. A bond valence parameter, R0, for Fe4+ has been derived as 1.788(2) Å. © 1992.

引用

页码：179 / 185

页数：7

共 11 条

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