Crystal Lab › Prototype structures › Tetragonal
TaMoN
Tetragonal · space group P4/nmm (No. 129) · Pearson tP6
Symmetry elements and Wyckoff positions (interactive)
TaMoN in P4/nmm
SettingUnit cell
- Lattice constants
- a = 3.081 Å, b = 3.081 Å, c = 7.800 Å; α = 90.00°, β = 90.00°, γ = 90.00°
- Cell volume
- 74.0 ų
- Atoms in the conventional cell
- 6 (Mo 2, N 2, Ta 2)
- Formula units Z
- 2
- Pearson symbol
- tP6 — tetragonal, primitive lattice, 6 atoms per conventional cell
- Symmetry operations
- 16 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| Mo1 | Mo | 2c | 2 | 0.2500 | 0.2500 | 0.6170 |
| N2 | N | 2c | 2 | 0.2500 | 0.2500 | 0.3350 |
| Ta3 | Ta | 2c | 2 | 0.2500 | 0.2500 | 0.9000 |
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 6 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
ABC_tP6_129_c_c_c-002: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol tP6, then the space-group number 129, then the Wyckoff letters occupied by each element in turn (Mo: 2c; N: 2c; Ta: 2c). Two structures with the same label are the same arrangement with different cell parameters or coordinates.
Other compounds with this structure
CrNbN, MoNbN, ReAlSi, ReGaSi <!--beginning with an
Source
Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry ABC_tP6_129_c_c_c-002 (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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