Crystal Lab › Prototype structures › Monoclinic
α-BiPd
Monoclinic · space group P1211 (No. 4) · Pearson mP16
Symmetry elements and Wyckoff positions (interactive)
α-BiPd in P1211
SettingUnit cell
- Lattice constants
- a = 5.635 Å, b = 10.660 Å, c = 5.664 Å; α = 90.00°, β = 100.83°, γ = 90.00°
- Cell volume
- 334.2 ų
- Atoms in the conventional cell
- 16 (Bi 8, Pd 8)
- Formula units Z
- 8
- Pearson symbol
- mP16 — monoclinic, primitive lattice, 16 atoms per conventional cell
- Symmetry operations
- 2 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| Bi1 | Bi | 2a | 2 | 0.8481 | 0.0000 | 0.9133 |
| Bi2 | Bi | 2a | 2 | 0.3724 | 0.9937 | 0.3488 |
| Bi3 | Bi | 2a | 2 | 0.1520 | 0.7123 | 0.6016 |
| Bi4 | Bi | 2a | 2 | 0.6071 | 0.7139 | 0.1559 |
| Pd5 | Pd | 2a | 2 | 0.9150 | 0.2710 | 0.9130 |
| Pd6 | Pd | 2a | 2 | 0.3250 | 0.2650 | 0.3230 |
| Pd7 | Pd | 2a | 2 | 0.1140 | 0.4370 | 0.5940 |
| Pd8 | Pd | 2a | 2 | 0.6480 | 0.4410 | 0.1640 |
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 16 atoms drawn above are these sites multiplied by all 2 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
AB_mP16_4_4a_4a-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol mP16, then the space-group number 4, then the Wyckoff letters occupied by each element in turn (Bi: 2a; Bi: 2a; Bi: 2a; Bi: 2a; Pd: 2a; Pd: 2a; Pd: 2a; Pd: 2a). Two structures with the same label are the same arrangement with different cell parameters or coordinates.
Other compounds with this structure
IrU <!--beginning with an
Note: α-BiPd.
Source
Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry AB_mP16_4_4a_4a-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.
← AlPO₄-41 — AlO₄P · Space group P1211 (11 prototypes) · All prototypes · High-pressure Te →