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KB₆H₆

Cubic · space group Fm-3 (No. 202) · Pearson cF104

Symmetry elements and Wyckoff positions (interactive)

KB₆H₆ in Fm-3

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

Unit cell

Lattice constants
a = 10.610 Å, b = 10.610 Å, c = 10.610 Å; α = 90.00°, β = 90.00°, γ = 90.00°
Cell volume
1194.4 ų
Atoms in the conventional cell
104 (K 8, B 48, H 48)
Formula units Z
8
Pearson symbol
cF104 — cubic, face-centred lattice, 104 atoms per conventional cell
Symmetry operations
96 per cell

Crystallographic sites

SiteElementWyckoffMultiplicityxyz
K3K8c80.25000.25000.2500
B1B48h480.00000.58270.6359
H2H48h480.00000.63800.7200

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 104 atoms drawn above are these sites multiplied by all 96 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

A6B6C_cF104_202_h_h_c-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol cF104, then the space-group number 202, then the Wyckoff letters occupied by each element in turn (K: 8c; B: 48h; H: 48h). Two structures with the same label are the same arrangement with different cell parameters or coordinates.

Source

Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry A6B6C_cF104_202_h_h_c-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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