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SC16 (CuCl)

Cubic · space group Pa-3 (No. 205) · Pearson cP16

Symmetry elements and Wyckoff positions (interactive)

SC16 (CuCl) in Pa-3

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

Unit cell

Lattice constants
a = 6.416 Å, b = 6.416 Å, c = 6.416 Å; α = 90.00°, β = 90.00°, γ = 90.00°
Cell volume
264.1 ų
Atoms in the conventional cell
16 (Cl 8, Cu 8)
Formula units Z
8
Pearson symbol
cP16 — cubic, primitive lattice, 16 atoms per conventional cell
Symmetry operations
24 per cell

Crystallographic sites

SiteElementWyckoffMultiplicityxyz
Cl1Cl8c80.15270.15270.1527
Cu2Cu8c80.62970.62970.6297

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 16 atoms drawn above are these sites multiplied by all 24 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

AB_cP16_205_c_c-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol cP16, then the space-group number 205, then the Wyckoff letters occupied by each element in turn (Cl: 8c; Cu: 8c). Two structures with the same label are the same arrangement with different cell parameters or coordinates.

Other compounds with this structure

BrCu <!--beginning with an

Note: SC16 CuCl.

Source

Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry AB_cP16_205_c_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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