Skip to content

Crystal Lab › Prototype structures › Orthorhombic

Ag₂O₃

Orthorhombic · space group Fdd2 (No. 43) · Pearson oF40

Symmetry elements and Wyckoff positions (interactive)

Ag₂O₃ in Fdd2

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

Unit cell

Lattice constants
a = 12.869 Å, b = 10.490 Å, c = 3.664 Å; α = 90.00°, β = 90.00°, γ = 90.00°
Cell volume
494.6 ų
Atoms in the conventional cell
40 (O 24, Ag 16)
Formula units Z
8
Pearson symbol
oF40 — orthorhombic, face-centred lattice, 40 atoms per conventional cell
Symmetry operations
16 per cell

Crystallographic sites

SiteElementWyckoffMultiplicityxyz
O2O8a80.00000.00000.8402
Ag1Ag16b160.95330.63250.0000
O3O16b160.58300.73330.6153

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 16 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

A2B3_oF40_43_b_ab-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol oF40, then the space-group number 43, then the Wyckoff letters occupied by each element in turn (O: 8a; Ag: 16b; O: 16b). 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 A2B3_oF40_43_b_ab-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.

← Al₂₂Mo₅  ·  Space group Fdd2 (8 prototypes)  ·  All prototypes  ·  Natrolite (Na₂Al₂Si₃O₁₀cdot2H₂O, S6₁₀) →