Crystal structure of alluaudite-type NaMg3(HPO4)2(PO4)

Acta Crystallographica Section E: Crystallographic Communications

Mercier, C.¹  Saadi, M.³  Ould Saleck, A.⁴  Follet, C.⁵  Assani, A.⁷  El Ammari, L.⁹ 

[1] Mohammed V, Avenue Ibn Battouta, BP 1014, Rabat, Morocco;de Valenciennes et du Hainaut-Cambrédes Sciences, UniversitéLaboratoire de Chimie du Solide AppliquéLaboratoire des Matédée, Facultéramiques et Procériaux Cés Associés, EA2443, Universitésis, Boulevard Charles de Gaulle, BP 59600, Maubeuge, France

关键词: CRYSTAL STRUCTURE;    TRANSITION METAL PHOSPHATES;    ALLUAUDITE STRUCTURE TYPE;    HYDROTHERMAL SYNTHESIS;    HYDROGEN BONDING;   

DOI  :  10.1107/S205698901501155X

学科分类：数学（综合）

来源: International Union of Crystallography

【 摘 要 】

The title compound, sodium trimagnesium bis­(hydrogen phosphate) phosphate, was obtained under hydro­thermal conditions. In the crystal, two types of [MgO6] octa­hedra, one with point group symmetry 2, share edges to build chains extending parallel to [10-1]. These chains are linked together by two kinds of phosphate tetra­hedra, HPO4 and PO4, the latter with point group symmetry 2. The three-dimensional framework delimits two different types of channels extending along [001]. One channel hosts the Na+ cations (site symmetry 2) surrounded by eight O atoms, with Na—O bond lengths varying between 2.2974 (13) and 2.922 (2) Å. The OH group of the HPO4 tetra­hedron points into the other type of channel and exhibits a strong hydrogen bond to an O atom of the PO4 tetra­hedron on the opposite side.

【 授权许可】

CC BY