Academic Journal
Redetermination of the crystal structure of NaTcO4 at 100 and 296 K based on single-crystal X-ray data
| العنوان: | Redetermination of the crystal structure of NaTcO4 at 100 and 296 K based on single-crystal X-ray data |
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| المؤلفون: | Konstantin E. German, Mikhail S. Grigoriev, Bogdan L. Garashchenko, Alexander V. Kopytin, Ekaterina A. Tyupina |
| المصدر: | Acta Crystallographica Section E: Crystallographic Communications, Vol 73, Iss 7, Pp 1037-1040 (2017) |
| بيانات النشر: | International Union of Crystallography, 2017. |
| سنة النشر: | 2017 |
| المجموعة: | LCC:Crystallography |
| مصطلحات موضوعية: | Technetium, sodium, redetermination, crystal structure, low temperature, high precision, Crystallography, QD901-999 |
| الوصف: | The redetermination of the title compound, sodium pertechnate, from single-crystal CCD data recorded both at 296 and 100 K confirms previous studies based on X-ray powder diffraction film data [Schwochau (1962). Z. Naturforsch. Teil A, 17, 630; Keller & Kanellakopulos (1963). Radiochim. Acta, 1, 107–108] and neutron powder diffraction data using the Rietveld method [Weaver et al. (2017). Inorg. Chem. 12, 677–681], but reveals a considerable improvement in precision. The standard uncertainties of the room-temperature structure determination are about seven times lower than those of the neutron diffraction structure determination and about 13 times lower at 100 K, due to the decrease in the amplitude of librations. The crystal expansion could be approximated linearly with a thermal volumic expansion coefficient of 1.19 (12) × 10−4 K−1. NaTcO4 adopts the scheelite (CaWO4) structure type in space group type I41/a with Na and Tc atoms (both with site symmetry -4) replacing Ca and W atoms, respectively. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2056-9890 20569890 |
| Relation: | http://scripts.iucr.org/cgi-bin/paper?S2056989017008362; https://doaj.org/toc/2056-9890 |
| DOI: | 10.1107/S2056989017008362 |
| URL الوصول: | https://doaj.org/article/5fcd3cd66bb942e2b83cb2adc787c4c5 |
| رقم الانضمام: | edsdoj.5fcd3cd66bb942e2b83cb2adc787c4c5 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 20569890 |
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| DOI: | 10.1107/S2056989017008362 |