Crystal Lab › Prototype structures › Orthorhombic
Ba₅(Ir,Ru)₃O₁₂ [Ba₅IrRu₂O₁₂]
Orthorhombic · space group Pnma (No. 62) · Pearson oP80
Symmetry elements and Wyckoff positions (interactive)
Ba₅(Ir,Ru)₃O₁₂ [Ba₅IrRu₂O₁₂] in Pnma
SettingUnit cell
- Lattice constants
- a = 10.853 Å, b = 5.897 Å, c = 19.819 Å; α = 90.00°, β = 90.00°, γ = 90.00°
- Cell volume
- 1268.4 ų
- Atoms in the conventional cell
- 80 (Ba 20, Ir 4, O 48, Ru 8)
- Formula units Z
- 4
- Pearson symbol
- oP80 — orthorhombic, primitive lattice, 80 atoms per conventional cell
- Symmetry operations
- 8 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| Ba1 | Ba | 4c | 4 | 0.0271 | 0.2500 | 0.4268 |
| Ba2 | Ba | 4c | 4 | 0.1860 | 0.2500 | 0.6305 |
| Ba3 | Ba | 4c | 4 | 0.5477 | 0.2500 | 0.6757 |
| Ba4 | Ba | 4c | 4 | 0.3875 | 0.2500 | 0.4686 |
| Ba5 | Ba | 4c | 4 | 0.1959 | 0.2500 | 0.2539 |
| Ir6 | Ir | 4c | 4 | 0.7847 | 0.2500 | 0.5565 |
| O7 | O | 4c | 4 | 0.7790 | 0.2500 | 0.7550 |
| O8 | O | 4c | 4 | 0.3060 | 0.2500 | 0.1420 |
| O9 | O | 4c | 4 | 0.4670 | 0.2500 | 0.9180 |
| O10 | O | 4c | 4 | 0.1110 | 0.2500 | 0.9760 |
| Ru11 | Ru | 4c | 4 | 0.8810 | 0.2500 | 0.6740 |
| Ru12 | Ru | 4c | 4 | 0.6949 | 0.2500 | 0.4302 |
| O13 | O | 8d | 8 | 0.3090 | 0.4780 | 0.0182 |
| O14 | O | 8d | 8 | 0.5130 | 0.9820 | 0.2070 |
| O15 | O | 8d | 8 | 0.0950 | 0.0150 | 0.1050 |
| O16 | O | 8d | 8 | 0.2620 | 0.4860 | 0.8690 |
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 80 atoms drawn above are these sites multiplied by all 8 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
A5BC12D2_oP80_62_5c_c_4c4d_2c-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol oP80, then the space-group number 62, then the Wyckoff letters occupied by each element in turn (Ba: 4c; Ba: 4c; Ba: 4c; Ba: 4c; Ba: 4c; Ir: 4c; O: 4c; O: 4c; O: 4c; O: 4c; Ru: 4c; Ru: 4c; O: 8d; O: 8d; O: 8d; O: 8d). Two structures with the same label are the same arrangement with different cell parameters or coordinates.
Other compounds with this structure
Ba₅(Ru_{2.8}P_{0.2})₃O₁₂ <!--beginning with an
Source
Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry A5BC12D2_oP80_62_5c_c_4c4d_2c-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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