Crystal Lab › Prototype structures › Monoclinic
Ce₇Pd₄Ge₂
Monoclinic · space group P121/c1 (No. 14) · Pearson mP52
Symmetry elements and Wyckoff positions (interactive)
Ce₇Pd₄Ge₂ in P121/c1
SettingUnit cell
- Lattice constants
- a = 9.350 Å, b = 12.277 Å, c = 12.284 Å; α = 90.00°, β = 109.61°, γ = 90.00°
- Cell volume
- 1328.4 ų
- Atoms in the conventional cell
- 52 (Co 28, Ge 8, Pd 16)
- Formula units Z
- 4
- Pearson symbol
- mP52 — monoclinic, primitive lattice, 52 atoms per conventional cell
- Symmetry operations
- 4 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| Co1 | Co | 4e | 4 | 0.3624 | 0.7518 | 0.0895 |
| Co2 | Co | 4e | 4 | 0.6321 | 0.9989 | 0.1545 |
| Co3 | Co | 4e | 4 | 0.3626 | 0.2468 | 0.0924 |
| Co4 | Co | 4e | 4 | 0.6465 | 0.4986 | 0.1637 |
| Co5 | Co | 4e | 4 | 0.0017 | 0.4011 | 0.0992 |
| Co6 | Co | 4e | 4 | 0.9997 | 0.8387 | 0.1197 |
| Co7 | Co | 4e | 4 | 0.9979 | 0.1201 | 0.1605 |
| Ge8 | Ge | 4e | 4 | 0.8561 | 0.6228 | 0.0826 |
| Ge9 | Ge | 4e | 4 | 0.1441 | 0.6199 | 0.1574 |
| Pd10 | Pd | 4e | 4 | 0.2989 | 0.5003 | 0.0749 |
| Pd11 | Pd | 4e | 4 | 0.2508 | 0.9993 | 0.0605 |
| Pd12 | Pd | 4e | 4 | 0.7276 | 0.7536 | 0.1861 |
| Pd13 | Pd | 4e | 4 | 0.7241 | 0.2511 | 0.1796 |
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 52 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
A7B2C4_mP52_14_7e_2e_4e-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol mP52, then the space-group number 14, then the Wyckoff letters occupied by each element in turn (Co: 4e; Co: 4e; Co: 4e; Co: 4e; Co: 4e; Co: 4e; Co: 4e; Ge: 4e; Ge: 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.
Other compounds with this structure
Pd₇Ge₄Co₂ <!--beginning with an
Source
Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry A7B2C4_mP52_14_7e_2e_4e-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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