Crystal Lab › Prototype structures › Orthorhombic
α-RbPr[MoO₄]₂ Mo₂O₈PrRb
Orthorhombic · space group Pnnn (No. 48) · Pearson oP24
Symmetry elements and Wyckoff positions (interactive)
α-RbPr[MoO₄]₂ in Pnnn
SettingUnit cell
- Lattice constants
- a = 9.540 Å, b = 6.330 Å, c = 6.330 Å; α = 90.00°, β = 90.00°, γ = 90.00°
- Cell volume
- 382.3 ų
- Atoms in the conventional cell
- 24 (Pr 2, Rb 2, Mo 4, O 16)
- Formula units Z
- 2
- Pearson symbol
- oP24 — orthorhombic, primitive lattice, 24 atoms per conventional cell
- Symmetry operations
- 8 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| Pr4 | Pr | 2a | 2 | 0.2500 | 0.2500 | 0.2500 |
| Rb5 | Rb | 2b | 2 | 0.7500 | 0.2500 | 0.2500 |
| Mo1 | Mo | 4h | 4 | 0.0022 | 0.2500 | 0.7500 |
| O2 | O | 8m | 8 | 0.6140 | 0.0600 | 0.6290 |
| O3 | O | 8m | 8 | 0.1010 | 0.1420 | 0.5580 |
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 24 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
A2B8CD_oP24_48_h_2m_a_b-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol oP24, then the space-group number 48, then the Wyckoff letters occupied by each element in turn (Pr: 2a; Rb: 2b; Mo: 4h; O: 8m; O: 8m). Two structures with the same label are the same arrangement with different cell parameters or coordinates.
Note: α-RbPr[MoO₄]₂.
Source
Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry A2B8CD_oP24_48_h_2m_a_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.
· Space group Pnnn (2 prototypes) · All prototypes · Gd₂Ni₃Ga₅ →