Crystal Lab › Prototype structures › Monoclinic
β-Tl₂TeO₃ O₃TeTl₂
Monoclinic · space group P121/c1 (No. 14) · Pearson mP24
Symmetry elements and Wyckoff positions (interactive)
β-Tl₂TeO₃ in P121/c1
SettingUnit cell
- Lattice constants
- a = 8.975 Å, b = 4.853 Å, c = 11.884 Å; α = 90.00°, β = 109.67°, γ = 90.00°
- Cell volume
- 487.5 ų
- Atoms in the conventional cell
- 24 (O 12, Te 4, Tl 8)
- 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 |
|---|---|---|---|---|---|---|
| O1 | O | 4e | 4 | 0.3843 | 0.7000 | 0.1583 |
| O2 | O | 4e | 4 | 0.0933 | 0.6970 | 0.2015 |
| O3 | O | 4e | 4 | 0.1704 | 0.1350 | 0.0739 |
| Te4 | Te | 4e | 4 | 0.1677 | 0.7503 | 0.0750 |
| Tl5 | Tl | 4e | 4 | 0.4948 | 0.2352 | 0.1160 |
| Tl6 | Tl | 4e | 4 | 0.8106 | 0.7322 | 0.1867 |
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
A3BC2_mP24_14_3e_e_2e-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 (O: 4e; O: 4e; O: 4e; Te: 4e; Tl: 4e; Tl: 4e). Two structures with the same label are the same arrangement with different cell parameters or coordinates.
Note: \beta-Tl₂TeO₃.
Source
Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry A3BC2_mP24_14_3e_e_2e-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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