| Autor: |
Pabla J; Department of Physics, Farmingdale State College, Farmingdale, NY 11735, USA., Janssen Y; Department of Physics, Farmingdale State College, Farmingdale, NY 11735, USA., Simonson JW; Department of Physics, Farmingdale State College, Farmingdale, NY 11735, USA. |
| Jazyk: |
angličtina |
| Zdroj: |
Acta crystallographica. Section E, Crystallographic communications [Acta Crystallogr E Crystallogr Commun] 2016 Oct 11; Vol. 72 (Pt 11), pp. 1565-1568. Date of Electronic Publication: 2016 Oct 11 (Print Publication: 2016). |
| DOI: |
10.1107/S2056989016015668 |
| Abstrakt: |
Single crystals of a new multinary chromium carbide, La 21 Cr 8-2 a Al b Ge 7- b C 12 (henicosa-lanthanum octa-chromium aluminium hexa-germanium dodeca-carbide), were grown from an La-rich self flux and were characterized by single-crystal X-ray diffraction. The face-centered cubic crystal structure is composed of isolated and geometrically frustrated regular Cr tetra-hedra that are co-centered within regular C octa-hedra. These mutually separated Cr 4-a C 6 clusters are distributed throughout a three-dimensional framework of Al, Ge, and La. The title compound is isotypic with La 21-δ Mn 8 X 7 C 12 and R 21 Fe 8 X 7 C 12 ( R = La, Ce, Pr; X = Al, Bi, Ge, Sn, Sb, Te) and represents the first example of a Cr-based compound with this structure-type. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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