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Crystal Lab › Prototype structures › Orthorhombic

CeTe₃

Orthorhombic · space group Ama2 (No. 40) · Pearson oC16

Symmetry elements and Wyckoff positions (interactive)

CeTe₃ in Ama2

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

Unit cell

Lattice constants
a = 4.385 Å, b = 25.974 Å, c = 4.373 Å; α = 90.00°, β = 90.00°, γ = 90.00°
Cell volume
498.1 ų
Atoms in the conventional cell
16 (Ce 4, Te 12)
Formula units Z
4
Pearson symbol
oC16 — orthorhombic, base-centred lattice, 16 atoms per conventional cell
Symmetry operations
8 per cell

Crystallographic sites

SiteElementWyckoffMultiplicityxyz
Ce1Ce4b40.25000.83110.0000
Te2Te4b40.25000.70420.0021
Te3Te4b40.25000.56970.4966
Te4Te4b40.25000.93000.4978

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 16 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_oC16_40_b_3b-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol oC16, then the space-group number 40, then the Wyckoff letters occupied by each element in turn (Ce: 4b; Te: 4b; Te: 4b; Te: 4b). Two structures with the same label are the same arrangement with different cell parameters or coordinates.

Other compounds with this structure

NdTe₃, PrTe₃ <!--beginning with an

Source

Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry AB3_oC16_40_b_3b-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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