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Crystal Lab › Prototype structures › Hexagonal

Pt₂Sn₃ (D5_{b})

Hexagonal · space group P63/mmc (No. 194) · Pearson hP10 · Strukturbericht D5b

Symmetry elements and Wyckoff positions (interactive)

Pt₂Sn₃ (D5_{b}) in P63/mmc

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

Unit cell

Lattice constants
a = 4.361 Å, b = 4.361 Å, c = 12.960 Å; α = 90.00°, β = 90.00°, γ = 120.00°
Cell volume
213.4 ų
Atoms in the conventional cell
10 (Sn 6, Pt 4)
Formula units Z
2
Pearson symbol
hP10 — hexagonal / trigonal, primitive lattice, 10 atoms per conventional cell
Symmetry operations
24 per cell

Crystallographic sites

SiteElementWyckoffMultiplicityxyz
Sn2Sn2b20.00000.00000.2500
Pt1Pt4f40.33330.66670.6430
Sn3Sn4f40.33330.66670.4300

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 10 atoms drawn above are these sites multiplied by all 24 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

A2B3_hP10_194_f_bf-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol hP10, then the space-group number 194, then the Wyckoff letters occupied by each element in turn (Sn: 2b; Pt: 4f; Sn: 4f). Two structures with the same label are the same arrangement with different cell parameters or coordinates.

Other compounds with this structure

Pt₂Si₃, InAu₂Ga₂, Au₄In₃Sn₃ <!--beginning with an

Note: D5_{b}.

Source

Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry A2B3_hP10_194_f_bf-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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