Crystal Lab › Prototype structures › Orthorhombic
Shcherbinaite (D8₇, V₂O₅) Structure ( Obsolete ): A5B2_oP14_31_a2b_b-001
Orthorhombic · space group Pmn21 (No. 31) · Pearson oP14 · Strukturbericht D87 · mineral: shcherbinaite
Symmetry elements and Wyckoff positions (interactive)
Shcherbinaite (D8₇, V₂O₅) Structure ( Obsolete ): A5B2_oP14_31_a2b_b-001 in Pmn21
SettingUnit cell
- Lattice constants
- a = 11.480 Å, b = 4.360 Å, c = 3.550 Å; α = 90.00°, β = 90.00°, γ = 90.00°
- Cell volume
- 177.7 ų
- Atoms in the conventional cell
- 14 (O 10, V 4)
- Formula units Z
- 2
- Pearson symbol
- oP14 — orthorhombic, primitive lattice, 14 atoms per conventional cell
- Symmetry operations
- 4 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| O1 | O | 2a | 2 | 0.0000 | 0.0800 | 0.8900 |
| O2 | O | 4b | 4 | 0.1480 | 0.4500 | 0.9200 |
| O3 | O | 4b | 4 | 0.2000 | 0.0300 | 0.4600 |
| V4 | V | 4b | 4 | 0.1480 | 0.0970 | 0.0000 |
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 14 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
A5B2_oP14_31_a2b_b-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol oP14, then the space-group number 31, then the Wyckoff letters occupied by each element in turn (O: 2a; O: 4b; O: 4b; V: 4b). Two structures with the same label are the same arrangement with different cell parameters or coordinates.
Note: D8₇, Scherbinaite (Obsolete).
Source
Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry A5B2_oP14_31_a2b_b-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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