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Crystal Lab › Prototype structures › Orthorhombic

LiZnPO₄cdotH₂O

Orthorhombic · space group Pna21 (No. 33) · Pearson oP40

Symmetry elements and Wyckoff positions (interactive)

LiZnPO₄cdotH₂O in Pna21

Setting
Loading the group…
x = 0.10, y = 0.17, z = 0.08

Unit 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

SiteElementWyckoffMultiplicityxyz
H1H4a40.48140.05950.8991
H2H4a40.47770.19200.6232
Li3Li4a40.19400.31100.6740
O4O4a40.94810.16180.1049
O5O4a40.20850.31520.0840
O6O4a40.16370.10520.5801
O7O4a40.18980.93310.9974
O8O4a40.50930.09200.7149
P9P4a40.32460.41170.1929
Zn10Zn4a40.12490.10640.1951

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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