Crystal Lab › Prototype structures › Orthorhombic
HoSb₂
Orthorhombic · space group C222 (No. 21) · Pearson oC6
Symmetry elements and Wyckoff positions (interactive)
HoSb₂ in C222
SettingUnit cell
- Lattice constants
- a = 5.790 Å, b = 3.343 Å, c = 7.840 Å; α = 90.00°, β = 90.00°, γ = 90.00°
- Cell volume
- 151.8 ų
- Atoms in the conventional cell
- 6 (Ho 2, Sb 4)
- Formula units Z
- 2
- Pearson symbol
- oC6 — orthorhombic, base-centred lattice, 6 atoms per conventional cell
- Symmetry operations
- 8 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| Ho1 | Ho | 2a | 2 | 0.0000 | 0.0000 | 0.0000 |
| Sb2 | Sb | 4k | 4 | 0.2500 | 0.2500 | 0.6600 |
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 8 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
AB2_oC6_21_a_k-002: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol oC6, then the space-group number 21, then the Wyckoff letters occupied by each element in turn (Ho: 2a; Sb: 4k). Two structures with the same label are the same arrangement with different cell parameters or coordinates.
Other compounds with this structure
LuSb₂, YSb₂, DySb₂ (HT), GdSb₂ (HT), TbSb₂ (HT) <!--beginning with an
Source
Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry AB2_oC6_21_a_k-002 (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.