Crystal Lab › Prototype structures › Hexagonal
Ce₂₄Co₁₁
Hexagonal · space group P63mc (No. 186) · Pearson hP70
Symmetry elements and Wyckoff positions (interactive)
Ce₂₄Co₁₁ in P63mc
SettingUnit cell
- Lattice constants
- a = 9.587 Å, b = 9.587 Å, c = 21.825 Å; α = 90.00°, β = 90.00°, γ = 120.00°
- Cell volume
- 1737.2 ų
- Atoms in the conventional cell
- 70 (Ce 48, Co 22)
- Formula units Z
- 2
- Pearson symbol
- hP70 — hexagonal / trigonal, primitive lattice, 70 atoms per conventional cell
- Symmetry operations
- 12 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| Ce1 | Ce | 2a | 2 | 0.0000 | 0.0000 | 0.2074 |
| Ce2 | Ce | 2a | 2 | 0.0000 | 0.0000 | 0.0526 |
| Co11 | Co | 2a | 2 | 0.0000 | 0.0000 | 0.4326 |
| Ce3 | Ce | 2b | 2 | 0.3333 | 0.6667 | 0.8647 |
| Co12 | Co | 2b | 2 | 0.3333 | 0.6667 | 0.0845 |
| Ce10 | Ce | 6c | 6 | 0.1245 | 0.8755 | 0.8542 |
| Ce4 | Ce | 6c | 6 | 0.2011 | 0.7989 | 0.0000 |
| Ce5 | Ce | 6c | 6 | 0.2016 | 0.7984 | 0.1628 |
| Ce6 | Ce | 6c | 6 | 0.2029 | 0.7971 | 0.4414 |
| Ce7 | Ce | 6c | 6 | 0.2065 | 0.7935 | 0.7091 |
| Ce8 | Ce | 6c | 6 | 0.4580 | 0.5420 | 0.3057 |
| Ce9 | Ce | 6c | 6 | 0.4586 | 0.5414 | 0.5748 |
| Co13 | Co | 6c | 6 | 0.1456 | 0.8544 | 0.2762 |
| Co14 | Co | 6c | 6 | 0.1503 | 0.8497 | 0.5881 |
| Co15 | Co | 6c | 6 | 0.4819 | 0.5181 | 0.9290 |
The multiplicity and the Wyckoff letter say how many copies of the site the group makes in one cell and on which kind of symmetry element the site sits; the 70 atoms drawn above are these sites multiplied by all 12 operations. Press Wyckoff under Colour to see the sites, and tick a symmetry element on the left to see which atoms lie on it.
How to read the label
A24B11_hP70_186_2ab7c_ab3c-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol hP70, then the space-group number 186, then the Wyckoff letters occupied by each element in turn (Ce: 2a; Ce: 2a; Co: 2a; Ce: 2b; Co: 2b; Ce: 6c; Ce: 6c; Ce: 6c; Ce: 6c; Ce: 6c; Ce: 6c; Ce: 6c; Co: 6c; Co: 6c; Co: 6c). Two structures with the same label are the same arrangement with different cell parameters or coordinates.
Other compounds with this structure
La₂₄Ru₁₁, Nd₂₄Co₁₁ <!--beginning with an
Source
Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry A24B11_hP70_186_2ab7c_ab3c-001 (M. J. Mehl et al., Comput. Mater. Sci. 136, S1 (2017); D. Hicks et al., ibid. 161, S1 (2019) and 199, 110450 (2021); S. Eckert et al., ibid. 240, 112988 (2024)). Symmetry elements, Wyckoff assignment and the diagram are computed on this page from the group operations.
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