Skip to content

Crystal Lab › Prototype structures › Orthorhombic

K₂CuCl₃

Orthorhombic · space group Pnma (No. 62) · Pearson oP24

Symmetry elements and Wyckoff positions (interactive)

K₂CuCl₃ in Pnma

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

Unit cell

Lattice constants
a = 12.000 Å, b = 4.200 Å, c = 12.560 Å; α = 90.00°, β = 90.00°, γ = 90.00°
Cell volume
633.0 ų
Atoms in the conventional cell
24 (Cl 12, Cu 4, K 8)
Formula units Z
4
Pearson symbol
oP24 — orthorhombic, primitive lattice, 24 atoms per conventional cell
Symmetry operations
8 per cell

Crystallographic sites

SiteElementWyckoffMultiplicityxyz
Cl1Cl4c40.13300.25000.4480
Cl2Cl4c40.43500.25000.3620
Cl3Cl4c40.27700.25000.7090
Cu4Cu4c40.25200.25000.3030
K5K4c40.17200.25000.0200
K6K4c40.51200.25000.8270

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 24 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

A3BC2_oP24_62_3c_c_2c-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol oP24, then the space-group number 62, then the Wyckoff letters occupied by each element in turn (Cl: 4c; Cl: 4c; Cl: 4c; Cu: 4c; K: 4c; K: 4c). Two structures with the same label are the same arrangement with different cell parameters or coordinates.

Other compounds with this structure

Ba₂ZnS₃, Cs₂AgCl₃, Cs₂AgI₃ <!--beginning with an

Source

Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry A3BC2_oP24_62_3c_c_2c-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.

← C₃Cr₇ (D10₁)  ·  Space group Pnma (113 prototypes)  ·  All prototypes  ·  Low Temperature Orthorhombic CH₃NH₃PbBr₃ — Br₃CH₆NPb →