دورية أكاديمية
Redetermination of kovdorskite, Mg2PO4(OH)·3H2O
| العنوان: | Redetermination of kovdorskite, Mg2PO4(OH)·3H2O |
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| المؤلفون: | Shaunna M. Morrison, Robert T. Downs, Hexiong Yang |
| المصدر: | Acta Crystallographica Section E, Vol 68, Iss 2, Pp i12-i13 (2012) |
| بيانات النشر: | International Union of Crystallography, 2012. |
| سنة النشر: | 2012 |
| المجموعة: | LCC:Crystallography |
| مصطلحات موضوعية: | Crystallography, QD901-999 |
| الوصف: | The crystal structure of kovdorskite, ideally Mg2PO4(OH)·3H2O (dimagnesium phosphate hydroxide trihydrate), was reported previously with isotropic displacement paramaters only and without H-atom positions [Ovchinnikov et al. (1980). Dokl. Akad. Nauk SSSR. 255, 351–354]. In this study, the kovdorskite structure is redetermined based on single-crystal X-ray diffraction data from a sample from the type locality, the Kovdor massif, Kola Peninsula, Russia, with anisotropic displacement parameters for all non-H atoms, with all H-atom located and with higher precision. Moreover, inconsistencies of the previously published structural data with respect to reported and calculated X-ray powder patterns are also discussed. The structure of kovdorskite contains a set of four edge-sharing MgO6 octahedra interconnected by PO4 tetrahedra and O—H...O hydrogen bonds, forming columns and channels parallel to [001]. The hydrogen-bonding system in kovdorskite is formed through the water molecules, with the OH− ions contributing little, if any, to the system, as indicated by the long H...A distances (>2.50 Å) to the nearest O atoms. The hydrogen-bond lengths determined from the structure refinement agree well with Raman spectroscopic data. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 16005368 1600-5368 |
| Relation: | http://scripts.iucr.org/cgi-bin/paper?S1600536812000256; https://doaj.org/toc/1600-5368 |
| DOI: | 10.1107/S1600536812000256 |
| URL الوصول: | https://doaj.org/article/947197346d2442138ad98d2525c0a9a9 |
| رقم الأكسشن: | edsdoj.947197346d2442138ad98d2525c0a9a9 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 16005368 |
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| DOI: | 10.1107/S1600536812000256 |