Rietveld refinement of the langbeinite-type phosphate K2Ni0.5Hf1.5(PO4)3
| Autor: | Liang Zhou, Denys S. Butenko, Ivan V. Ogorodnyk, Nickolai I. Klyui, Igor V. Zatovsky |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Acta Crystallographica Section E: Crystallographic Communications, Vol 76, Iss 10, Pp 1634-1637 (2020) |
| Druh dokumentu: | article |
| ISSN: | 2056-9890 20569890 |
| DOI: | 10.1107/S2056989020012062 |
| Popis: | Polycrystalline potassium nickel(II) hafnium(IV) tris(orthophosphate), a langbeinite-type phosphate, was synthesized by a solid-state method. The three-dimensional framework of the title compound is built up from two types of [MO6] octahedra [the M sites are occupied by Hf:Ni in ratios of 0.754 (8):0.246 (8) and 0.746 (8):0.254 (8), respectively] and [PO4] tetrahedra are connected via O vertices. The K+ cations are located in two positions within large cavities of the framework, having coordination numbers of 9 and 12. The Hf, Ni and K sites lie on threefold rotation axes, while the P and O atoms are situated in general positions. |
| Databáze: | Directory of Open Access Journals |
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