Crystal Lab › Prototype structures › Tetragonal
SrPt₃P
Tetragonal · space group P4/nmm (No. 129) · Pearson tP10
Symmetry elements and Wyckoff positions (interactive)
SrPt₃P in P4/nmm
SettingUnit cell
- Lattice constants
- a = 5.809 Å, b = 5.809 Å, c = 5.383 Å; α = 90.00°, β = 90.00°, γ = 90.00°
- Cell volume
- 181.7 ų
- Atoms in the conventional cell
- 10 (Sr 2, P 2, Pt 6)
- Formula units Z
- 2
- Pearson symbol
- tP10 — tetragonal, primitive lattice, 10 atoms per conventional cell
- Symmetry operations
- 16 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| Sr4 | Sr | 2a | 2 | 0.7500 | 0.2500 | 0.0000 |
| P1 | P | 2c | 2 | 0.2500 | 0.2500 | 0.7226 |
| Pt2 | Pt | 2c | 2 | 0.2500 | 0.2500 | 0.1409 |
| Pt3 | Pt | 4e | 4 | 0.0000 | 0.0000 | 0.5000 |
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 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
AB3C_tP10_129_c_ce_a-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol tP10, then the space-group number 129, then the Wyckoff letters occupied by each element in turn (Sr: 2a; P: 2c; Pt: 2c; Pt: 4e). Two structures with the same label are the same arrangement with different cell parameters or coordinates.
Other compounds with this structure
CaPt₃P, LaPt₃P, BaAu₃Ge <!--beginning with an
Source
Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry AB3C_tP10_129_c_ce_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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