Synthesis and crystal structure of the high-pressure iron borate α-FeB2O4

被引：18

作者：

Knyrim, Johanna S. ^{[2
]}

Huppertz, Hubert ^{[1
]}

机构：

[1] Leopold Franzens Univ Innsbruck, Inst Allgemeine Anorgan & Theoret Chem, A-6020 Innsbruck, Austria

[2] Univ Munich, Dept Chem & Biochem, D-81377 Munich, Germany

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2008年 / 181卷 / 08期

关键词：

high-pressure; multianvil; crystal structure; borate;

D O I：

10.1016/j.jssc.2008.05.016

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The high-pressure iron borate alpha-FeB2O4 was synthesized under high-pressure and high-temperature conditions in a Walker-type multianvil apparatus at 7.5 GPa and 1100 degrees C. The monoclinic iron borate crystallizes with eight formula units in the space group P2(1)/c with the lattice parameters a = 715.2(2), b = 744.5(2), c = 862.3(2) pm, and beta = 94.71(3)degrees. The compound is built up exclusively from corner-sharing BO4-tetrahedra, isotypic to the monoclinic phases beta-SrGa2O4, CaAl2O4-II, and CaGa2O4. Additionally, the structure is closely related to the orthorhombic compound BaFe2O4. The structure consists of layers of six-membered rings, which are interconnected to a three-dimensional network. The iron cations are coordinated by six and seven oxygen atoms. Next to synthesis and crystal structure of the new high-pressure borate, structural coherences to other structure types are discussed. (C) 2008 Elsevier Inc. All rights reserved.

引用

页码：2092 / 2098

页数：7

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