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Crystal Lab › Prototype structures › Monoclinic

CdCu(SeO₃)₂

Monoclinic · space group P121/c1 (No. 14) · Pearson mP40

Symmetry elements and Wyckoff positions (interactive)

CdCu(SeO₃)₂ in P121/c1

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

Unit cell

Lattice constants
a = 10.840 Å, b = 10.394 Å, c = 7.257 Å; α = 90.00°, β = 136.27°, γ = 90.00°
Cell volume
565.2 ų
Atoms in the conventional cell
40 (Cd 4, Cu 4, O 24, Se 8)
Formula units Z
4
Pearson symbol
mP40 — monoclinic, primitive lattice, 40 atoms per conventional cell
Symmetry operations
4 per cell

Crystallographic sites

SiteElementWyckoffMultiplicityxyz
Cd1Cd4e40.73960.45030.7530
Cu2Cu4e40.68350.41810.1604
O3O4e40.13150.51440.8010
O4O4e40.98660.63820.9106
O5O4e40.78820.48900.5005
O6O4e40.45670.38020.0289
O7O4e40.63900.21090.4177
O8O4e40.45230.38610.3836
Se9Se4e40.94680.60710.6443
Se10Se4e40.43240.27990.1862

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 40 atoms drawn above are these sites multiplied by all 4 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

ABC6D2_mP40_14_e_e_6e_2e-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol mP40, then the space-group number 14, then the Wyckoff letters occupied by each element in turn (Cd: 4e; Cu: 4e; O: 4e; O: 4e; O: 4e; O: 4e; O: 4e; O: 4e; Se: 4e; Se: 4e). Two structures with the same label are the same arrangement with different cell parameters or coordinates.

Other compounds with this structure

HgCu(SeO₃)₂ <!--beginning with an

Source

Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry ABC6D2_mP40_14_e_e_6e_2e-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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