Crystal Lab › Prototype structures › Monoclinic
CrTe₃
Monoclinic · space group P121/c1 (No. 14) · Pearson mP32
Symmetry elements and Wyckoff positions (interactive)
CrTe₃ in P121/c1
SettingUnit cell
- Lattice constants
- a = 7.888 Å, b = 11.222 Å, c = 11.550 Å; α = 90.00°, β = 118.48°, γ = 90.00°
- Cell volume
- 898.7 ų
- Atoms in the conventional cell
- 32 (Cr 8, Te 24)
- Formula units Z
- 8
- Pearson symbol
- mP32 — monoclinic, primitive lattice, 32 atoms per conventional cell
- Symmetry operations
- 4 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| Cr1 | Cr | 4e | 4 | 0.0102 | 0.0018 | 0.6723 |
| Cr2 | Cr | 4e | 4 | -0.0218 | 0.2764 | 0.4897 |
| Te3 | Te | 4e | 4 | 0.7735 | -0.0934 | 0.4265 |
| Te4 | Te | 4e | 4 | 0.2062 | 0.1179 | 0.8982 |
| Te5 | Te | 4e | 4 | 0.6995 | 0.0576 | -0.0994 |
| Te6 | Te | 4e | 4 | 0.7293 | 0.3277 | 0.0669 |
| Te7 | Te | 4e | 4 | 0.2728 | 0.6740 | 0.2466 |
| Te8 | Te | 4e | 4 | 0.2048 | 0.1152 | 0.2354 |
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 32 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
AB3_mP32_14_2e_6e-002: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol mP32, then the space-group number 14, then the Wyckoff letters occupied by each element in turn (Cr: 4e; Cr: 4e; Te: 4e; Te: 4e; Te: 4e; Te: 4e; Te: 4e; Te: 4e). 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 AB3_mP32_14_2e_6e-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.
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