Crystal Lab › Prototype structures › Tetragonal
ZrFe₄Si₂
Tetragonal · space group P42/mnm (No. 136) · Pearson tP14
Symmetry elements and Wyckoff positions (interactive)
ZrFe₄Si₂ in P42/mnm
SettingUnit cell
- Lattice constants
- a = 7.004 Å, b = 7.004 Å, c = 3.755 Å; α = 90.00°, β = 90.00°, γ = 90.00°
- Cell volume
- 184.2 ų
- Atoms in the conventional cell
- 14 (Zr 2, Si 4, Fe 8)
- Formula units Z
- 2
- Pearson symbol
- tP14 — tetragonal, primitive lattice, 14 atoms per conventional cell
- Symmetry operations
- 16 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| Zr3 | Zr | 2a | 2 | 0.0000 | 0.0000 | 0.0000 |
| Si2 | Si | 4f | 4 | 0.7201 | 0.7201 | 0.0000 |
| Fe1 | Fe | 8i | 8 | 0.1532 | 0.5920 | 0.0000 |
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 14 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
A4B2C_tP14_136_i_f_a-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol tP14, then the space-group number 136, then the Wyckoff letters occupied by each element in turn (Zr: 2a; Si: 4f; Fe: 8i). Two structures with the same label are the same arrangement with different cell parameters or coordinates.
Other compounds with this structure
BaCd₄Pt₂, DyFe₄Ge₂, DyNi₄As₂, ErFe₄Ge₂, ErNi₄P₂, GdNi₄As₂, GdRe₄Si₂, HoFe₄Ge₂, LuFe₄Ge₂, LuNi₄As₂, LuRe₄Si₂, ScFe₄P₂, ScFe₄Si₂, ScNi₄As₂, SmRe₄Si₂, SrCd₄Pt₂, TbRe₄Si₂, TmFe₄Ge₂, TmRe₄Si₂, UMn₄P₂, YFe₄Ge₂, YNi₄As₂, YNi₄P₂, YRe₄Si₂, YbNi₄P₂, ZrFe₄P₂, ZrNi₄As₂ <!--beginning with an
Source
Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry A4B2C_tP14_136_i_f_a-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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