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Crystal Lab › Prototype structures › Tetragonal

Zr₃PD₃

Tetragonal · space group P42/nbc (No. 133) · Pearson tP64

Symmetry elements and Wyckoff positions (interactive)

Zr₃PD₃ in P42/nbc

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

Unit cell

Lattice constants
a = 11.180 Å, b = 11.180 Å, c = 5.430 Å; α = 90.00°, β = 90.00°, γ = 90.00°
Cell volume
678.7 ų
Atoms in the conventional cell
64 (P 8, Zr 24, D 32)
Formula units Z
8
Pearson symbol
tP64 — tetragonal, primitive lattice, 64 atoms per conventional cell
Symmetry operations
16 per cell

Crystallographic sites

SiteElementWyckoffMultiplicityxyz
P3P8h80.54510.25000.0000
Zr4Zr8i80.61080.25000.5000
Zr5Zr8j80.65550.65550.2500
Zr6Zr8j80.05600.05600.2500
D1D16k160.99950.10500.5823
D2D16k160.18130.17490.1338

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 64 atoms drawn above are these sites multiplied by all 16 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

A4BC3_tP64_133_2k_h_i2j-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol tP64, then the space-group number 133, then the Wyckoff letters occupied by each element in turn (P: 8h; Zr: 8i; Zr: 8j; Zr: 8j; D: 16k; D: 16k). Two structures with the same label are the same arrangement with different cell parameters or coordinates.

Other compounds with this structure

Ti₃PD₃ <!--beginning with an

Source

Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry A4BC3_tP64_133_2k_h_i2j-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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