Crystal Lab › Prototype structures › Hexagonal
BaNiO₃
Hexagonal · space group P63/mmc (No. 194) · Pearson hP10
Symmetry elements and Wyckoff positions (interactive)
BaNiO₃ in P63/mmc
SettingUnit cell
- Lattice constants
- a = 5.580 Å, b = 5.580 Å, c = 4.832 Å; α = 90.00°, β = 90.00°, γ = 120.00°
- Cell volume
- 130.3 ų
- Atoms in the conventional cell
- 10 (Ni 2, Ba 2, O 6)
- Formula units Z
- 2
- Pearson symbol
- hP10 — hexagonal / trigonal, primitive lattice, 10 atoms per conventional cell
- Symmetry operations
- 24 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| Ni2 | Ni | 2a | 2 | 0.0000 | 0.0000 | 0.0000 |
| Ba1 | Ba | 2c | 2 | 0.3333 | 0.6667 | 0.2500 |
| O3 | O | 6h | 6 | 0.1667 | 0.3333 | 0.2500 |
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 10 atoms drawn above are these sites multiplied by all 24 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
ABC3_hP10_194_c_a_h-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol hP10, then the space-group number 194, then the Wyckoff letters occupied by each element in turn (Ni: 2a; Ba: 2c; O: 6h). Two structures with the same label are the same arrangement with different cell parameters or coordinates.
Other compounds with this structure
BaMnO₃, BaRuS₃, BaTiS₃, CeCrO₃, CeTiGe₃, CeTiO₃, CeVO₃, CsCuCl₃, CsMnBr₃, CsVIr₃, LaCrO₃, LaTiGe₃, LaTiO₃, LaVO₃, NdCrO₃, NdVO₃, PrCrO₃, PrTiGe₃, PrTiO₃, PrVO₃, RbCoCl₃, RbCuCl₃, SmCrO₃, TlCoCl₃ <!--beginning with an
Source
Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry ABC3_hP10_194_c_a_h-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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