Crystal Lab › Prototype structures › Tetragonal
Room Temperature Metastable VO₂ O₂V
Tetragonal · space group P4/ncc (No. 130) · Pearson tP48
Symmetry elements and Wyckoff positions (interactive)
Room Temperature Metastable VO₂ in P4/ncc
SettingUnit cell
- Lattice constants
- a = 8.440 Å, b = 8.440 Å, c = 7.666 Å; α = 90.00°, β = 90.00°, γ = 90.00°
- Cell volume
- 546.1 ų
- Atoms in the conventional cell
- 48 (O 32, V 16)
- Formula units Z
- 16
- Pearson symbol
- tP48 — tetragonal, primitive lattice, 48 atoms per conventional cell
- Symmetry operations
- 16 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| O1 | O | 16g | 16 | 0.4039 | 0.7481 | 0.3776 |
| O2 | O | 16g | 16 | 0.4099 | 0.4108 | 0.3732 |
| V3 | V | 16g | 16 | 0.4482 | 0.7246 | 0.1294 |
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 48 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
A2B_tP48_130_2g_g-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol tP48, then the space-group number 130, then the Wyckoff letters occupied by each element in turn (O: 16g; O: 16g; V: 16g). Two structures with the same label are the same arrangement with different cell parameters or coordinates.
Note: Metastable at RT.
Source
Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry A2B_tP48_130_2g_g-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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