Crystal Lab › Prototype structures › Orthorhombic
LiGaO₂
Orthorhombic · space group Pna21 (No. 33) · Pearson oP16
Symmetry elements and Wyckoff positions (interactive)
LiGaO₂ in Pna21
SettingUnit cell
- Lattice constants
- a = 5.402 Å, b = 6.372 Å, c = 5.007 Å; α = 90.00°, β = 90.00°, γ = 90.00°
- Cell volume
- 172.3 ų
- Atoms in the conventional cell
- 16 (Ga 4, Li 4, O 8)
- Formula units Z
- 4
- Pearson symbol
- oP16 — orthorhombic, primitive lattice, 16 atoms per conventional cell
- Symmetry operations
- 4 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| Ga1 | Ga | 4a | 4 | 0.0821 | 0.1263 | 0.0000 |
| Li2 | Li | 4a | 4 | 0.4207 | 0.1267 | 0.4936 |
| O3 | O | 4a | 4 | 0.4066 | 0.1388 | 0.8972 |
| O4 | O | 4a | 4 | 0.0697 | 0.1121 | 0.3708 |
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 16 atoms drawn above are these sites multiplied by all 4 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
ABC2_oP16_33_a_a_2a-003: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol oP16, then the space-group number 33, then the Wyckoff letters occupied by each element in turn (Ga: 4a; Li: 4a; O: 4a; O: 4a). Two structures with the same label are the same arrangement with different cell parameters or coordinates.
Other compounds with this structure
BeNSi₂, LiAgN₂, LiAlSe₂, LiGaSe₂, LiVN₂, MgSiN₂, MnGeN₂, NaFeO₂, NaGaO₂, ZnGeN₂ <!--beginning with an
Source
Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry ABC2_oP16_33_a_a_2a-003 (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.
← β-NaFeO₂ · Space group Pna21 (13 prototypes) · All prototypes · γ-LiIO₃ — ILiO₃ →