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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

Setting
Loading the group…
x = 0.10, y = 0.17, z = 0.08

Unit 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

SiteElementWyckoffMultiplicityxyz
Co1Co2a20.00000.00000.0000
Zn2Zn2c20.00000.00000.5000
Zn3Zn4i40.38900.00000.4300
Zn4Zn4i40.78100.00000.8610
Zn5Zn8j80.42200.79750.8220
Zn6Zn8j80.82350.17650.3000

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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