Crystal Lab › Prototype structures › Orthorhombic
CsB₉O₁₄
Orthorhombic · space group P2221 (No. 17) · Pearson oP96
Symmetry elements and Wyckoff positions (interactive)
CsB₉O₁₄ in P2221
SettingUnit cell
- Lattice constants
- a = 8.806 Å, b = 8.753 Å, c = 15.792 Å; α = 90.00°, β = 90.00°, γ = 90.00°
- Cell volume
- 1217.2 ų
- Atoms in the conventional cell
- 96 (Cs 4, B 36, O 56)
- Formula units Z
- 4
- Pearson symbol
- oP96 — orthorhombic, primitive lattice, 96 atoms per conventional cell
- Symmetry operations
- 4 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| Cs10 | Cs | 2a | 2 | 0.5259 | 0.0000 | 0.0000 |
| Cs11 | Cs | 2c | 2 | 0.0000 | 0.5084 | 0.2500 |
| B1 | B | 4e | 4 | 0.3344 | 0.1348 | 0.8118 |
| B2 | B | 4e | 4 | 0.4384 | 0.3839 | 0.8680 |
| B3 | B | 4e | 4 | 0.2889 | 0.8674 | 0.7789 |
| B4 | B | 4e | 4 | 0.1742 | 0.0721 | 0.7000 |
| B5 | B | 4e | 4 | 0.3620 | 0.3470 | 0.1255 |
| B6 | B | 4e | 4 | 0.8781 | 0.3214 | 0.0529 |
| B7 | B | 4e | 4 | 0.6238 | 0.4216 | 0.1095 |
| B8 | B | 4e | 4 | 0.1469 | 0.2784 | 0.0271 |
| B9 | B | 4e | 4 | 0.9582 | 0.1788 | 0.9332 |
| O12 | O | 4e | 4 | 0.2324 | 0.1784 | 0.7475 |
| O13 | O | 4e | 4 | 0.2933 | 0.7230 | 0.7997 |
| O14 | O | 4e | 4 | 0.3284 | 0.4886 | 0.8662 |
| O15 | O | 4e | 4 | 0.4239 | 0.2303 | 0.8544 |
| O16 | O | 4e | 4 | 0.3558 | 0.9807 | 0.8248 |
| O17 | O | 4e | 4 | 0.2026 | 0.9158 | 0.7082 |
| O18 | O | 4e | 4 | 0.0675 | 0.1009 | 0.6398 |
| O19 | O | 4e | 4 | 0.5926 | 0.5757 | 0.1143 |
| O20 | O | 4e | 4 | 0.8429 | 0.2228 | 0.9877 |
| O21 | O | 4e | 4 | 0.2937 | 0.2890 | 0.0476 |
| O22 | O | 4e | 4 | 0.5254 | 0.3116 | 0.1169 |
| O23 | O | 4e | 4 | 0.7784 | 0.3942 | 0.0995 |
| O24 | O | 4e | 4 | 0.0316 | 0.3362 | 0.0749 |
| O25 | O | 4e | 4 | 0.1075 | 0.2043 | 0.9530 |
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 96 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
A9BC14_oP96_17_9e_ac_14e-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol oP96, then the space-group number 17, then the Wyckoff letters occupied by each element in turn (Cs: 2a; Cs: 2c; B: 4e; B: 4e; B: 4e; B: 4e; B: 4e; B: 4e; B: 4e; B: 4e; B: 4e; O: 4e; O: 4e; O: 4e; O: 4e; O: 4e; O: 4e; O: 4e; O: 4e; O: 4e; O: 4e; O: 4e; O: 4e; O: 4e; O: 4e). 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 A9BC14_oP96_17_9e_ac_14e-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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