Crystal Lab › Prototype structures › Orthorhombic
Ta₂Ni₃Te₅
Orthorhombic · space group Pnma (No. 62) · Pearson oP40
Symmetry elements and Wyckoff positions (interactive)
Ta₂Ni₃Te₅ in Pnma
SettingUnit cell
- Lattice constants
- a = 13.897 Å, b = 3.695 Å, c = 17.729 Å; α = 90.00°, β = 90.00°, γ = 90.00°
- Cell volume
- 910.4 ų
- Atoms in the conventional cell
- 40 (Ni 12, Ta 8, Te 20)
- Formula units Z
- 4
- Pearson symbol
- oP40 — orthorhombic, primitive lattice, 40 atoms per conventional cell
- Symmetry operations
- 8 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| Ni1 | Ni | 4c | 4 | 0.3064 | 0.2500 | 0.1888 |
| Ni2 | Ni | 4c | 4 | 0.3009 | 0.2500 | 0.7329 |
| Ni3 | Ni | 4c | 4 | 0.7563 | 0.2500 | 0.5388 |
| Ta4 | Ta | 4c | 4 | 0.2585 | 0.2500 | 0.3336 |
| Ta5 | Ta | 4c | 4 | 0.2567 | 0.2500 | 0.5880 |
| Te6 | Te | 4c | 4 | 0.8870 | 0.2500 | 0.6392 |
| Te7 | Te | 4c | 4 | 0.3716 | 0.2500 | 0.4614 |
| Te8 | Te | 4c | 4 | 0.8893 | 0.2500 | 0.4403 |
| Te9 | Te | 4c | 4 | 0.6102 | 0.2500 | 0.7352 |
| Te10 | Te | 4c | 4 | 0.6129 | 0.2500 | 0.3421 |
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 40 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
A3B2C5_oP40_62_3c_2c_5c-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol oP40, then the space-group number 62, then the Wyckoff letters occupied by each element in turn (Ni: 4c; Ni: 4c; Ni: 4c; Ta: 4c; Ta: 4c; Te: 4c; Te: 4c; Te: 4c; Te: 4c; Te: 4c). Two structures with the same label are the same arrangement with different cell parameters or coordinates.
Other compounds with this structure
Ta₂Pd₃Te₅ <!--beginning with an
Source
Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry A3B2C5_oP40_62_3c_2c_5c-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.
← RhCl₂(NH₃)₅Cl (J1₈) · Space group Pnma (113 prototypes) · All prototypes · Approximate Cu₃(TeO₄)(SO₄)cdotH₂O →