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Crystal Lab › Prototype structures › Orthorhombic

HoSb₂

Orthorhombic · space group C222 (No. 21) · Pearson oC6

Symmetry elements and Wyckoff positions (interactive)

HoSb₂ in C222

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

Unit cell

Lattice constants
a = 5.790 Å, b = 3.343 Å, c = 7.840 Å; α = 90.00°, β = 90.00°, γ = 90.00°
Cell volume
151.8 ų
Atoms in the conventional cell
6 (Ho 2, Sb 4)
Formula units Z
2
Pearson symbol
oC6 — orthorhombic, base-centred lattice, 6 atoms per conventional cell
Symmetry operations
8 per cell

Crystallographic sites

SiteElementWyckoffMultiplicityxyz
Ho1Ho2a20.00000.00000.0000
Sb2Sb4k40.25000.25000.6600

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

AB2_oC6_21_a_k-002: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol oC6, then the space-group number 21, then the Wyckoff letters occupied by each element in turn (Ho: 2a; Sb: 4k). Two structures with the same label are the same arrangement with different cell parameters or coordinates.

Other compounds with this structure

LuSb₂, YSb₂, DySb₂ (HT), GdSb₂ (HT), TbSb₂ (HT) <!--beginning with an

Source

Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry AB2_oC6_21_a_k-002 (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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