Crystal Lab › Prototype structures › Monoclinic
ε-1,2,3,4,5,6-Hexachloro cyclo hexane (C₆Cl₆)
Monoclinic · space group P121/c1 (No. 14) · Pearson mP24 · mineral: epsilon-1,2,3,4,5,6-Hexachloro cyclo hexane
Symmetry elements and Wyckoff positions (interactive)
ε-1,2,3,4,5,6-Hexachloro cyclo hexane (C₆Cl₆) in P121/c1
SettingUnit cell
- Lattice constants
- a = 11.458 Å, b = 11.790 Å, c = 6.800 Å; α = 90.00°, β = 145.38°, γ = 90.00°
- Cell volume
- 521.8 ų
- Atoms in the conventional cell
- 24 (C 12, Cl 12)
- Formula units Z
- 12
- Pearson symbol
- mP24 — monoclinic, primitive lattice, 24 atoms per conventional cell
- Symmetry operations
- 4 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| C1 | C | 4e | 4 | 0.7940 | 0.0130 | 0.7890 |
| C2 | C | 4e | 4 | 0.9110 | 0.1150 | 0.8160 |
| C3 | C | 4e | 4 | 0.0350 | 0.0410 | 0.8580 |
| Cl4 | Cl | 4e | 4 | 0.6310 | 0.9290 | 0.4190 |
| Cl5 | Cl | 4e | 4 | 0.7300 | 0.1880 | 0.4180 |
| Cl6 | Cl | 4e | 4 | 0.1900 | 0.1300 | 0.8920 |
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 4 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_mP24_14_3e_3e-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol mP24, then the space-group number 14, then the Wyckoff letters occupied by each element in turn (C: 4e; C: 4e; C: 4e; Cl: 4e; Cl: 4e; Cl: 4e). Two structures with the same label are the same arrangement with different cell parameters or coordinates.
Note: \epsilon-Hexachloro{\em cyclo}hexane.
Source
Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry AB_mP24_14_3e_3e-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.
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