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Crystal Lab › Prototype structures › Monoclinic

Pd₆P

Monoclinic · space group P121/c1 (No. 14) · Pearson mP28

Symmetry elements and Wyckoff positions (interactive)

Pd₆P in P121/c1

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

Unit cell

Lattice constants
a = 5.674 Å, b = 9.441 Å, c = 8.210 Å; α = 90.00°, β = 110.41°, γ = 90.00°
Cell volume
412.2 ų
Atoms in the conventional cell
28 (P 4, Pd 24)
Formula units Z
4
Pearson symbol
mP28 — monoclinic, primitive lattice, 28 atoms per conventional cell
Symmetry operations
4 per cell

Crystallographic sites

SiteElementWyckoffMultiplicityxyz
P1P4e40.88450.26080.7519
Pd2Pd4e40.96690.86350.9445
Pd3Pd4e40.52650.13810.0684
Pd4Pd4e40.77560.86960.5752
Pd5Pd4e40.70700.13150.4326
Pd6Pd4e40.87020.57770.7527
Pd7Pd4e40.61270.41560.2529

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 28 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

AB6_mP28_14_e_6e-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol mP28, then the space-group number 14, then the Wyckoff letters occupied by each element in turn (P: 4e; Pd: 4e; Pd: 4e; Pd: 4e; Pd: 4e; Pd: 4e; Pd: 4e). 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 AB6_mP28_14_e_6e-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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