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Crystal Lab › Prototype structures › Tetragonal

γ-LiFeO₂ FeLiO₂

Tetragonal · space group I41/amd (No. 141) · Pearson tI16

Symmetry elements and Wyckoff positions (interactive)

γ-LiFeO₂ in I41/amd

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

Unit cell

Lattice constants
a = 4.082 Å, b = 4.082 Å, c = 8.822 Å; α = 90.00°, β = 90.00°, γ = 90.00°
Cell volume
147.0 ų
Atoms in the conventional cell
16 (Fe 4, Li 4, O 8)
Formula units Z
4
Pearson symbol
tI16 — tetragonal, body-centred lattice, 16 atoms per conventional cell
Symmetry operations
32 per cell

Crystallographic sites

SiteElementWyckoffMultiplicityxyz
Fe1Fe4a40.00000.75000.1250
Li2Li4b40.00000.25000.3750
O3O8e80.00000.25000.1068

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 32 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

ABC2_tI16_141_a_b_e-003: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol tI16, then the space-group number 141, then the Wyckoff letters occupied by each element in turn (Fe: 4a; Li: 4b; O: 8e). Two structures with the same label are the same arrangement with different cell parameters or coordinates.

Other compounds with this structure

ErLiO₂, δ-LiAlO₂, LiErO₂, LiFeO₂, LiInO₂, LiScO₂, LiTiO₂, LiTlO₂, LiYbO₂, NFMg₂, NaGdO₂, NaNdO₂, NaPrO₂, NaTbO₂, YbAgS₂ <!--beginning with an

Note: \gamma-LiFeO₂.

Source

Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry ABC2_tI16_141_a_b_e-003 (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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