Crystal Lab › Prototype structures › Orthorhombic
Re₂O₅(SO₄)₂
Orthorhombic · space group Pba2 (No. 32) · Pearson oP34
Symmetry elements and Wyckoff positions (interactive)
Re₂O₅(SO₄)₂ in Pba2
SettingUnit cell
- Lattice constants
- a = 8.426 Å, b = 9.649 Å, c = 5.908 Å; α = 90.00°, β = 90.00°, γ = 90.00°
- Cell volume
- 480.3 ų
- Atoms in the conventional cell
- 34 (O 26, Re 4, S 4)
- Formula units Z
- 2
- Pearson symbol
- oP34 — orthorhombic, primitive lattice, 34 atoms per conventional cell
- Symmetry operations
- 4 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| O1 | O | 2a | 2 | 0.0000 | 0.0000 | 0.0000 |
| O2 | O | 4c | 4 | 0.8080 | 0.5500 | 0.8946 |
| O3 | O | 4c | 4 | 0.6140 | 0.7595 | 0.9745 |
| O4 | O | 4c | 4 | 0.8197 | 0.8044 | 0.6420 |
| O5 | O | 4c | 4 | 0.5367 | 0.6481 | 0.3894 |
| O6 | O | 4c | 4 | 0.7689 | 0.9297 | 0.2917 |
| O7 | O | 4c | 4 | 0.8392 | 0.6880 | 0.2793 |
| Re8 | Re | 4c | 4 | 0.6767 | 0.6077 | 0.0844 |
| S9 | S | 4c | 4 | 0.8643 | 0.8235 | 0.4147 |
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 34 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
A13B2C2_oP34_32_a6c_c_c-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol oP34, then the space-group number 32, then the Wyckoff letters occupied by each element in turn (O: 2a; O: 4c; O: 4c; O: 4c; O: 4c; O: 4c; O: 4c; Re: 4c; S: 4c). 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 A13B2C2_oP34_32_a6c_c_c-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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