Crystal Lab › Prototype structures › Cubic
CoU (B_{a})
Cubic · space group I213 (No. 199) · Pearson cI16 · Strukturbericht Ba
Symmetry elements and Wyckoff positions (interactive)
CoU (B_{a}) in I213
SettingUnit cell
- Lattice constants
- a = 6.356 Å, b = 6.356 Å, c = 6.356 Å; α = 90.00°, β = 90.00°, γ = 90.00°
- Cell volume
- 256.7 ų
- Atoms in the conventional cell
- 16 (Co 8, U 8)
- Formula units Z
- 8
- Pearson symbol
- cI16 — cubic, body-centred lattice, 16 atoms per conventional cell
- Symmetry operations
- 24 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| Co1 | Co | 8a | 8 | 0.2940 | 0.2940 | 0.2940 |
| U2 | U | 8a | 8 | 0.0347 | 0.0347 | 0.0347 |
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 16 atoms drawn above are these sites multiplied by all 24 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
AB_cI16_199_a_a-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol cI16, then the space-group number 199, then the Wyckoff letters occupied by each element in turn (Co: 8a; U: 8a). Two structures with the same label are the same arrangement with different cell parameters or coordinates.
Other compounds with this structure
Ga₂Pu₃ <!--beginning with an
Note: B_{a}.
Source
Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry AB_cI16_199_a_a-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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