Crystal Lab › Prototype structures › Hexagonal
Ti₂InB₂
Hexagonal · space group P-6m2 (No. 187) · Pearson hP5
Symmetry elements and Wyckoff positions (interactive)
Ti₂InB₂ in P-6m2
SettingUnit cell
- Lattice constants
- a = 3.077 Å, b = 3.077 Å, c = 7.917 Å; α = 90.00°, β = 90.00°, γ = 120.00°
- Cell volume
- 64.9 ų
- Atoms in the conventional cell
- 5 (B 2, In 1, Ti 2)
- Formula units Z
- 1
- Pearson symbol
- hP5 — hexagonal / trigonal, primitive lattice, 5 atoms per conventional cell
- Symmetry operations
- 12 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| B1 | B | 1a | 1 | 0.0000 | 0.0000 | 0.0000 |
| In3 | In | 1b | 1 | 0.0000 | 0.0000 | 0.5000 |
| B2 | B | 1c | 1 | 0.3333 | 0.6667 | 0.0000 |
| Ti4 | Ti | 2i | 2 | 0.6667 | 0.3333 | 0.1982 |
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 5 atoms drawn above are these sites multiplied by all 12 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
A2BC2_hP5_187_ac_b_i-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol hP5, then the space-group number 187, then the Wyckoff letters occupied by each element in turn (B: 1a; In: 1b; B: 1c; Ti: 2i). Two structures with the same label are the same arrangement with different cell parameters or coordinates.
Other compounds with this structure
Hf₂InB₂, Hf₂SnB₂, Zr₂InB₂, Zr₂TlB₂ <!--beginning with an
Source
Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry A2BC2_hP5_187_ac_b_i-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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