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Crystal Lab › Prototype structures › Tetragonal

BaS₃ (D0₁₇)

Tetragonal · space group P-421m (No. 113) · Pearson tP8 · Strukturbericht D017

Symmetry elements and Wyckoff positions (interactive)

BaS₃ (D0₁₇) in P-421m

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

Unit cell

Lattice constants
a = 6.871 Å, b = 6.871 Å, c = 4.168 Å; α = 90.00°, β = 90.00°, γ = 90.00°
Cell volume
196.8 ų
Atoms in the conventional cell
8 (Ba 2, S 6)
Formula units Z
2
Pearson symbol
tP8 — tetragonal, primitive lattice, 8 atoms per conventional cell
Symmetry operations
8 per cell

Crystallographic sites

SiteElementWyckoffMultiplicityxyz
Ba1Ba2a20.00000.00000.0000
S2S2c20.00000.50000.2060
S3S4e40.17970.67970.4760

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 8 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

AB3_tP8_113_a_ce-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol tP8, then the space-group number 113, then the Wyckoff letters occupied by each element in turn (Ba: 2a; S: 2c; S: 4e). Two structures with the same label are the same arrangement with different cell parameters or coordinates.

Other compounds with this structure

AgDyTe₂, AgHgTe₂, AgErTe₂, AgTe₂Tm, AgGdTe₂, AgTe₂Y, BaSe₃, BaTe₃ <!--beginning with an

Note: D0₁₇.

Source

Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry AB3_tP8_113_a_ce-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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