Crystal Lab › Prototype structures › Orthorhombic
LiZnPO₄cdotH₂O
Orthorhombic · space group Pna21 (No. 33) · Pearson oP40
Symmetry elements and Wyckoff positions (interactive)
LiZnPO₄cdotH₂O in Pna21
SettingUnit cell
- Lattice constants
- a = 10.575 Å, b = 8.076 Å, c = 4.994 Å; α = 90.00°, β = 90.00°, γ = 90.00°
- Cell volume
- 426.5 ų
- Atoms in the conventional cell
- 40 (H 8, Li 4, O 20, P 4, Zn 4)
- Formula units Z
- 4
- Pearson symbol
- oP40 — orthorhombic, primitive lattice, 40 atoms per conventional cell
- Symmetry operations
- 4 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| H1 | H | 4a | 4 | 0.4814 | 0.0595 | 0.8991 |
| H2 | H | 4a | 4 | 0.4777 | 0.1920 | 0.6232 |
| Li3 | Li | 4a | 4 | 0.1940 | 0.3110 | 0.6740 |
| O4 | O | 4a | 4 | 0.9481 | 0.1618 | 0.1049 |
| O5 | O | 4a | 4 | 0.2085 | 0.3152 | 0.0840 |
| O6 | O | 4a | 4 | 0.1637 | 0.1052 | 0.5801 |
| O7 | O | 4a | 4 | 0.1898 | 0.9331 | 0.9974 |
| O8 | O | 4a | 4 | 0.5093 | 0.0920 | 0.7149 |
| P9 | P | 4a | 4 | 0.3246 | 0.4117 | 0.1929 |
| Zn10 | Zn | 4a | 4 | 0.1249 | 0.1064 | 0.1951 |
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 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
A2BC5DE_oP40_33_2a_a_5a_a_a-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 33, then the Wyckoff letters occupied by each element in turn (H: 4a; H: 4a; Li: 4a; O: 4a; O: 4a; O: 4a; O: 4a; O: 4a; P: 4a; Zn: 4a). Two structures with the same label are the same arrangement with different cell parameters or coordinates.
Source
Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry A2BC5DE_oP40_33_2a_a_5a_a_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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