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K₂PdSe₁₀

Orthorhombic · space group I212121 (No. 24) · Pearson oI104

Symmetry elements and Wyckoff positions (interactive)

K₂PdSe₁₀ in I212121

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

Unit cell

Lattice constants
a = 12.885 Å, b = 15.922 Å, c = 15.872 Å; α = 90.00°, β = 90.00°, γ = 90.00°
Cell volume
3256.2 ų
Atoms in the conventional cell
104 (Pd 8, K 16, Se 80)
Formula units Z
8
Pearson symbol
oI104 — orthorhombic, body-centred lattice, 104 atoms per conventional cell
Symmetry operations
8 per cell

Crystallographic sites

SiteElementWyckoffMultiplicityxyz
Pd3Pd4a40.37590.00000.2500
Pd4Pd4a40.87550.00000.2500
K1K8d80.38040.09810.6555
K2K8d80.62020.90900.3467
Se5Se8d80.12130.14320.8095
Se6Se8d80.08950.23790.7010
Se7Se8d80.12770.05910.6068
Se8Se8d80.15870.95140.5115
Se9Se8d80.88060.84610.2387
Se10Se8d80.81980.19400.3931
Se11Se8d80.96270.18220.4858
Se12Se8d80.87120.00930.0954
Se13Se8d80.43200.64380.5543
Se14Se8d80.78880.76360.4322

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 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

A2BC10_oI104_24_2d_2a_10d-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol oI104, then the space-group number 24, then the Wyckoff letters occupied by each element in turn (Pd: 4a; Pd: 4a; K: 8d; K: 8d; Se: 8d; Se: 8d; Se: 8d; Se: 8d; Se: 8d; Se: 8d; Se: 8d; Se: 8d; Se: 8d; Se: 8d). 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 A2BC10_oI104_24_2d_2a_10d-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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