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Crystal Lab › Prototype structures › Hexagonal

Zn₂Mo₃O₈

Hexagonal · space group P63mc (No. 186) · Pearson hP26

Symmetry elements and Wyckoff positions (interactive)

Zn₂Mo₃O₈ in P63mc

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

Unit cell

Lattice constants
a = 5.775 Å, b = 5.775 Å, c = 9.915 Å; α = 90.00°, β = 90.00°, γ = 120.00°
Cell volume
286.4 ų
Atoms in the conventional cell
26 (O 16, Zn 4, Mo 6)
Formula units Z
2
Pearson symbol
hP26 — hexagonal / trigonal, primitive lattice, 26 atoms per conventional cell
Symmetry operations
12 per cell

Crystallographic sites

SiteElementWyckoffMultiplicityxyz
O2O2a20.00001.00000.3886
O3O2b20.33330.66670.1470
Zn6Zn2b20.33330.66670.9465
Zn7Zn2b20.33330.66670.5132
Mo1Mo6c60.14610.85390.2500
O4O6c60.48610.51390.3639
O5O6c60.16470.83530.6354

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 26 atoms drawn above are these sites multiplied by all 12 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

A3B8C2_hP26_186_c_ab2c_2b-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol hP26, then the space-group number 186, then the Wyckoff letters occupied by each element in turn (O: 2a; O: 2b; Zn: 2b; Zn: 2b; Mo: 6c; O: 6c; O: 6c). Two structures with the same label are the same arrangement with different cell parameters or coordinates.

Other compounds with this structure

Cd₂Mo₃0₈, Co₂Mo₃0₈, Fe₂Mo₃0₈ (kamiokite), Mg₂Mo₃0₈, Mn₂Mo₃0₈, Ni₂Mo₃0₈ <!--beginning with an

Source

Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry A3B8C2_hP26_186_c_ab2c_2b-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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