Crystal Lab › Prototype structures › Cubic
α'-CuZrF₆ CuF₆Zr
Cubic · space group Fm-3m (No. 225) · Pearson cF32
Symmetry elements and Wyckoff positions (interactive)
α'-CuZrF₆ in Fm-3m
SettingUnit cell
- Lattice constants
- a = 7.950 Å, b = 7.950 Å, c = 7.950 Å; α = 90.00°, β = 90.00°, γ = 90.00°
- Cell volume
- 502.5 ų
- Atoms in the conventional cell
- 32 (Cu 4, Zr 4, F 24)
- Formula units Z
- 4
- Pearson symbol
- cF32 — cubic, face-centred lattice, 32 atoms per conventional cell
- Symmetry operations
- 192 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| Cu1 | Cu | 4a | 4 | 0.0000 | 0.0000 | 0.0000 |
| Zr3 | Zr | 4b | 4 | 0.5000 | 0.5000 | 0.5000 |
| F2 | F | 24e | 24 | 0.2494 | 0.0000 | 0.0000 |
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 32 atoms drawn above are these sites multiplied by all 192 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
AB6C_cF32_225_a_e_b-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol cF32, then the space-group number 225, then the Wyckoff letters occupied by each element in turn (Cu: 4a; Zr: 4b; F: 24e). Two structures with the same label are the same arrangement with different cell parameters or coordinates.
Note: α'-CuZrF₆.
Source
Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry AB6C_cF32_225_a_e_b-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.
← Gananite (BiF₃, D0₃) · Space group Fm-3m (28 prototypes) · All prototypes · L1_{a} (disputed CuPt₃ Structure): AB7_cF32_225_a_bd-001 →