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Crystal Lab › Prototype structures › Tetragonal

Zr₂CuSb₃

Tetragonal · space group P-4m2 (No. 115) · Pearson tP6

Symmetry elements and Wyckoff positions (interactive)

Zr₂CuSb₃ in P-4m2

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

Unit cell

Lattice constants
a = 3.940 Å, b = 3.940 Å, c = 8.697 Å; α = 90.00°, β = 90.00°, γ = 90.00°
Cell volume
135.0 ų
Atoms in the conventional cell
6 (Cu 1, Sb 3, Zr 2)
Formula units Z
1
Pearson symbol
tP6 — tetragonal, primitive lattice, 6 atoms per conventional cell
Symmetry operations
8 per cell

Crystallographic sites

SiteElementWyckoffMultiplicityxyz
Cu1Cu1a10.00000.00000.0000
Sb2Sb1b10.50000.50000.0000
Sb3Sb2g20.00000.50000.3835
Zr4Zr2g20.00000.50000.7315

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 6 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

AB3C2_tP6_115_a_bg_g-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol tP6, then the space-group number 115, then the Wyckoff letters occupied by each element in turn (Cu: 1a; Sb: 1b; Sb: 2g; Zr: 2g). Two structures with the same label are the same arrangement with different cell parameters or coordinates.

Other compounds with this structure

Hf₂CuSb₃, Hf₂GaSb₃, Ti₂CuSb₃, Zr₂PdSb₃ <!--beginning with an

Source

Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry AB3C2_tP6_115_a_bg_g-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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