Crystal Lab › Prototype structures › Orthorhombic
Ag₂O₃
Orthorhombic · space group Fdd2 (No. 43) · Pearson oF40
Symmetry elements and Wyckoff positions (interactive)
Ag₂O₃ in Fdd2
SettingUnit cell
- Lattice constants
- a = 12.869 Å, b = 10.490 Å, c = 3.664 Å; α = 90.00°, β = 90.00°, γ = 90.00°
- Cell volume
- 494.6 ų
- Atoms in the conventional cell
- 40 (O 24, Ag 16)
- Formula units Z
- 8
- Pearson symbol
- oF40 — orthorhombic, face-centred lattice, 40 atoms per conventional cell
- Symmetry operations
- 16 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| O2 | O | 8a | 8 | 0.0000 | 0.0000 | 0.8402 |
| Ag1 | Ag | 16b | 16 | 0.9533 | 0.6325 | 0.0000 |
| O3 | O | 16b | 16 | 0.5830 | 0.7333 | 0.6153 |
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 40 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
A2B3_oF40_43_b_ab-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol oF40, then the space-group number 43, then the Wyckoff letters occupied by each element in turn (O: 8a; Ag: 16b; O: 16b). 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 A2B3_oF40_43_b_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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