Crystal Lab › Prototype structures › Hexagonal
CrFe₃NiSn₅
Hexagonal · space group P6mm (No. 183) · Pearson hP6
Symmetry elements and Wyckoff positions (interactive)
CrFe₃NiSn₅ in P6mm
SettingUnit cell
- Lattice constants
- a = 5.317 Å, b = 5.317 Å, c = 4.426 Å; α = 90.00°, β = 90.00°, γ = 120.00°
- Cell volume
- 108.4 ų
- Atoms in the conventional cell
- 6 (Sn 3, Fe 3)
- Formula units Z
- 3
- Pearson symbol
- hP6 — hexagonal / trigonal, primitive lattice, 6 atoms per conventional cell
- Symmetry operations
- 12 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| Sn2 | Sn | 1a | 1 | 0.0000 | 0.0000 | 0.0000 |
| Sn3 | Sn | 2b | 2 | 0.3333 | 0.6667 | 0.5130 |
| Fe1 | Fe | 3c | 3 | 0.5000 | 0.0000 | 0.0100 |
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 6 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
AB_hP6_183_c_ab-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol hP6, then the space-group number 183, then the Wyckoff letters occupied by each element in turn (Sn: 1a; Sn: 2b; Fe: 3c). Two structures with the same label are the same arrangement with different cell parameters or coordinates.
Source
Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry AB_hP6_183_c_ab-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.