Crystal Lab › Prototype structures › Monoclinic
AgTe₂Tl₃
Monoclinic · space group P121/c1 (No. 14) · Pearson mP24
Symmetry elements and Wyckoff positions (interactive)
AgTe₂Tl₃ in P121/c1
SettingUnit cell
- Lattice constants
- a = 11.026 Å, b = 7.427 Å, c = 9.888 Å; α = 90.00°, β = 116.68°, γ = 90.00°
- Cell volume
- 723.5 ų
- Atoms in the conventional cell
- 24 (Ag 4, Te 8, Tl 12)
- Formula units Z
- 4
- 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 |
|---|---|---|---|---|---|---|
| Ag1 | Ag | 4e | 4 | 0.9070 | 0.8310 | 0.5811 |
| Te2 | Te | 4e | 4 | 0.0380 | 0.7655 | 0.3922 |
| Te3 | Te | 4e | 4 | 0.6242 | 0.7354 | 0.9354 |
| Tl4 | Tl | 4e | 4 | 0.2163 | 0.9844 | 0.2056 |
| Tl5 | Tl | 4e | 4 | 0.4121 | 0.7158 | 0.0805 |
| Tl6 | Tl | 4e | 4 | 0.2356 | 0.9912 | 0.7682 |
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
AB2C3_mP24_14_e_2e_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 (Ag: 4e; Te: 4e; Te: 4e; Tl: 4e; Tl: 4e; Tl: 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 AB2C3_mP24_14_e_2e_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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