Crystal Lab › Prototype structures › Monoclinic
CoZn₁₃
Monoclinic · space group C12/m1 (No. 12) · Pearson mC28
Symmetry elements and Wyckoff positions (interactive)
CoZn₁₃ in C12/m1
SettingUnit cell
- Lattice constants
- a = 10.846 Å, b = 7.535 Å, c = 4.992 Å; α = 90.00°, β = 79.29°, γ = 90.00°
- Cell volume
- 400.9 ų
- Atoms in the conventional cell
- 28 (Co 2, Zn 26)
- Formula units Z
- 2
- Pearson symbol
- mC28 — monoclinic, base-centred lattice, 28 atoms per conventional cell
- Symmetry operations
- 8 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| Co1 | Co | 2a | 2 | 0.0000 | 0.0000 | 0.0000 |
| Zn2 | Zn | 2c | 2 | 0.0000 | 0.0000 | 0.5000 |
| Zn3 | Zn | 4i | 4 | 0.3890 | 0.0000 | 0.4300 |
| Zn4 | Zn | 4i | 4 | 0.7810 | 0.0000 | 0.8610 |
| Zn5 | Zn | 8j | 8 | 0.4220 | 0.7975 | 0.8220 |
| Zn6 | Zn | 8j | 8 | 0.8235 | 0.1765 | 0.3000 |
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 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
AB13_mC28_12_a_c2i2j-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol mC28, then the space-group number 12, then the Wyckoff letters occupied by each element in turn (Co: 2a; Zn: 2c; Zn: 4i; Zn: 4i; Zn: 8j; Zn: 8j). Two structures with the same label are the same arrangement with different cell parameters or coordinates.
Other compounds with this structure
FeZn₁₃, MnZn₁₃ <!--beginning with an
Source
Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry AB13_mC28_12_a_c2i2j-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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