Crystal Lab › Prototype structures › Orthorhombic
W₃O₁₀ (WO₃ cdot frac13H₂O)
Orthorhombic · space group Fmm2 (No. 42) · Pearson oF52
Symmetry elements and Wyckoff positions (interactive)
W₃O₁₀ (WO₃ cdot frac13H₂O) in Fmm2
SettingUnit cell
- Lattice constants
- a = 7.449 Å, b = 12.667 Å, c = 7.799 Å; α = 90.00°, β = 90.00°, γ = 90.00°
- Cell volume
- 735.9 ų
- Atoms in the conventional cell
- 52 (O 40, W 12)
- Formula units Z
- 4
- Pearson symbol
- oF52 — orthorhombic, face-centred lattice, 52 atoms per conventional cell
- Symmetry operations
- 16 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| O1 | O | 4a | 4 | 0.0000 | 0.0000 | 0.7600 |
| O2 | O | 4a | 4 | 0.0000 | 0.0000 | 0.2700 |
| W6 | W | 4a | 4 | 0.0000 | 0.0000 | 0.0000 |
| O3 | O | 8b | 8 | 0.2500 | 0.2500 | 0.3100 |
| W7 | W | 8b | 8 | 0.2500 | 0.2500 | 0.0600 |
| O4 | O | 8c | 8 | 0.0000 | 0.2900 | 0.1000 |
| O5 | O | 16e | 16 | 0.1700 | 0.1100 | 0.0700 |
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 52 atoms drawn above are these sites multiplied by all 16 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
A10B3_oF52_42_2abce_ab-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol oF52, then the space-group number 42, then the Wyckoff letters occupied by each element in turn (O: 4a; O: 4a; W: 4a; O: 8b; W: 8b; O: 8c; O: 16e). 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 A10B3_oF52_42_2abce_ab-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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