Crystal Lab › Prototype structures › Trigonal
β-RuCl₃ Cl₃Ru
Trigonal · space group P3c1 (No. 158) · Pearson hP8
Symmetry elements and Wyckoff positions (interactive)
β-RuCl₃ in P3c1
SettingUnit cell
- Lattice constants
- a = 6.120 Å, b = 6.120 Å, c = 5.658 Å; α = 90.00°, β = 90.00°, γ = 120.00°
- Cell volume
- 183.5 ų
- Atoms in the conventional cell
- 8 (Ru 2, Cl 6)
- Formula units Z
- 2
- Pearson symbol
- hP8 — hexagonal / trigonal, primitive lattice, 8 atoms per conventional cell
- Symmetry operations
- 6 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| Ru2 | Ru | 2a | 2 | 0.0000 | 0.0000 | 0.0000 |
| Cl1 | Cl | 6d | 6 | 0.3180 | 0.0270 | 0.2370 |
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 8 atoms drawn above are these sites multiplied by all 6 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
A3B_hP8_158_d_a-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol hP8, then the space-group number 158, then the Wyckoff letters occupied by each element in turn (Ru: 2a; Cl: 6d). Two structures with the same label are the same arrangement with different cell parameters or coordinates.
Note: \beta-RuCl₃.
Source
Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry A3B_hP8_158_d_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.