Na3MgB37Si9: an icosahedral B12 cluster framework containing {Si8} units
| Autor: | Haruhiko Morito, Takuji Ikeda, Yukari Katsura, Hisanori Yamane |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Acta Crystallographica Section E: Crystallographic Communications, Vol 78, Iss 2, Pp 203-206 (2022) |
| Druh dokumentu: | article |
| ISSN: | 2056-9890 20569890 |
| DOI: | 10.1107/S2056989022000494 |
| Popis: | Single crystals of a novel sodium–magnesium boride silicide, Na3MgB37Si9 [a = 10.1630 (3) Å, c = 16.5742 (6) Å, space group R\overline{3}m (No. 166)], were synthesized by heating a mixture of Na, Si and crystalline B with B2O3 flux in Mg vapor at 1373 K. The Mg atoms in the title compound are located at an interstitial site of the Dy2.1B37Si9-type structure with an occupancy of 0.5. The (001) layers of B12 icosahedra stack along the c-axis direction with shifting in the [–a/3, b/3, c/3] direction. A three-dimensional framework structure of the layers is formed via B—Si bonds and {Si8} units of [Si]3—Si—Si—[Si]3. |
| Databáze: | Directory of Open Access Journals |
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