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首页> 外文期刊>Acta Crystallographica Section E: Crystallographic Communications >Crystal structure of calcium dinickel(II) iron(III) tris-(orthophosphate): CaNi2Fe(PO4)3
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Crystal structure of calcium dinickel(II) iron(III) tris-(orthophosphate): CaNi2Fe(PO4)3

机译:三(正磷酸)钙二镍(II)铁(III)的晶体结构:CaNi2Fe(PO4)3

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The title compound, CaNi2Fe(PO4)3, was synthesized by solid-state reactions. Its structure is closely related to that of α-CrPO4 in the space group Imma. Except for two O atoms in general positions, all atoms are located in special positions. The three-dimensional framework is built up from two types of sheets extending parallel to (100). The first sheet is made up from two edge-sharing [NiO6] octa-hedra, leading to the formation of [Ni2O10] double octa-hedra that are connected to two PO4 tetra-hedra through a common edge and corners. The second sheet results from rows of corner-sharing [FeO6] octa-hedra and PO4 tetra-hedra forming an infinite linear chain. These layers are linked together through common corners of PO4 tetra-hedra and [FeO6] octa-hedra, resulting in an open three-dimensional framework that delimits two types of channels parallel to [100] and [010] in which the eightfold-coordinated CaII cations are located.
机译:通过固相反应合成标题化合物CaNi2Fe(PO4)3。其结构与空间群Imma中的α-CrPO4密切相关。除了两个O原子位于一般位置外,所有原子都位于特殊位置。三维框架由平行于(100)延伸的两种类型的图纸构建而成。第一层由两个边缘共享的[NiO6]八面体组成,导致形成[Ni2O10]双八面体,它们通过一个公共边和角与两个PO4四面体相连。第二张纸是由排成一角的[FeO6]八面体和PO4四面体形成无限的线性链而产生的。这些层通过PO4四面体和[FeO6]八面体的公共角链接在一起,从而形成一个开放的三维框架,该框架界定了与[100]和[010]平行的两种通道,其中八倍坐标CaII阳离子位于。

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