Crystal Lab › Prototype structures › Orthorhombic
Cs₂Sb
Orthorhombic · space group Pnma (No. 62) · Pearson oP24
Symmetry elements and Wyckoff positions (interactive)
Cs₂Sb in Pnma
SettingUnit cell
- Lattice constants
- a = 15.985 Å, b = 6.319 Å, c = 10.995 Å; α = 90.00°, β = 90.00°, γ = 90.00°
- Cell volume
- 1110.6 ų
- Atoms in the conventional cell
- 24 (Cs 16, Sb 8)
- Formula units Z
- 8
- Pearson symbol
- oP24 — orthorhombic, primitive lattice, 24 atoms per conventional cell
- Symmetry operations
- 8 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| Cs1 | Cs | 4c | 4 | 0.0006 | 0.2500 | 0.6743 |
| Cs2 | Cs | 4c | 4 | 0.2044 | 0.2500 | 0.4059 |
| Cs3 | Cs | 4c | 4 | 0.2561 | 0.2500 | 0.7398 |
| Cs4 | Cs | 4c | 4 | 0.4393 | 0.2500 | 0.4136 |
| Sb5 | Sb | 4c | 4 | 0.1618 | 0.2500 | 0.0629 |
| Sb6 | Sb | 4c | 4 | 0.3436 | 0.2500 | 0.0916 |
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 24 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
A2B_oP24_62_4c_2c-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol oP24, then the space-group number 62, then the Wyckoff letters occupied by each element in turn (Cs: 4c; Cs: 4c; Cs: 4c; Cs: 4c; Sb: 4c; Sb: 4c). 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 A2B_oP24_62_4c_2c-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.
← C53 (SrBr₂) Structure ( Obsolete ): A2B_oP12_62_2c_c-010 · Space group Pnma (113 prototypes) · All prototypes · RhCl₂(NH₃)₅Cl (J1₈) →