Crystal structure of alluaudite-type NaMg3(HPO4)2(PO4)
| Autor: | Ahmed Ould Saleck, Abderrazzak Assani, Mohamed Saadi, Cyrille Mercier, Claudine Follet, Lahcen El Ammari |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Acta Crystallographica Section E: Crystallographic Communications, Vol 71, Iss 7, Pp 813-815 (2015) |
| Druh dokumentu: | article |
| ISSN: | 2056-9890 20569890 |
| DOI: | 10.1107/S205698901501155X |
| Popis: | 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. |
| Databáze: | Directory of Open Access Journals |
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