Crystal Lab › Prototype structures › Monoclinic
Pd₆P
Monoclinic · space group P121/c1 (No. 14) · Pearson mP28
Symmetry elements and Wyckoff positions (interactive)
Pd₆P in P121/c1
SettingUnit cell
- Lattice constants
- a = 5.674 Å, b = 9.441 Å, c = 8.210 Å; α = 90.00°, β = 110.41°, γ = 90.00°
- Cell volume
- 412.2 ų
- Atoms in the conventional cell
- 28 (P 4, Pd 24)
- Formula units Z
- 4
- Pearson symbol
- mP28 — monoclinic, primitive lattice, 28 atoms per conventional cell
- Symmetry operations
- 4 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| P1 | P | 4e | 4 | 0.8845 | 0.2608 | 0.7519 |
| Pd2 | Pd | 4e | 4 | 0.9669 | 0.8635 | 0.9445 |
| Pd3 | Pd | 4e | 4 | 0.5265 | 0.1381 | 0.0684 |
| Pd4 | Pd | 4e | 4 | 0.7756 | 0.8696 | 0.5752 |
| Pd5 | Pd | 4e | 4 | 0.7070 | 0.1315 | 0.4326 |
| Pd6 | Pd | 4e | 4 | 0.8702 | 0.5777 | 0.7527 |
| Pd7 | Pd | 4e | 4 | 0.6127 | 0.4156 | 0.2529 |
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 28 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
AB6_mP28_14_e_6e-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol mP28, then the space-group number 14, then the Wyckoff letters occupied by each element in turn (P: 4e; Pd: 4e; Pd: 4e; Pd: 4e; Pd: 4e; Pd: 4e; Pd: 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 AB6_mP28_14_e_6e-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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