Crystal Lab › Prototype structures › Hexagonal
Sc-V (High-Pressure)
Hexagonal · space group P6122 (No. 178) · Pearson hP6
Symmetry elements and Wyckoff positions (interactive)
Sc-V (High-Pressure) in P6122
SettingUnit cell
- Lattice constants
- a = 2.355 Å, b = 2.355 Å, c = 10.446 Å; α = 90.00°, β = 90.00°, γ = 120.00°
- Cell volume
- 50.2 ų
- Atoms in the conventional cell
- 6 (Sc 6)
- Formula units Z
- 6
- 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 |
|---|---|---|---|---|---|---|
| Sc1 | Sc | 6a | 6 | 0.4610 | 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 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
A_hP6_178_a-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 178, then the Wyckoff letters occupied by each element in turn (Sc: 6a). Two structures with the same label are the same arrangement with different cell parameters or coordinates.
Note: Sc-V (HP).
Source
Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry A_hP6_178_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.