Skip to content

Crystal Lab › Prototype structures › Monoclinic

Monoclinic UMo₅O₁₆ Mo₅O₁₆U

Monoclinic · space group P121 (No. 3) · Pearson mP22

Symmetry elements and Wyckoff positions (interactive)

Monoclinic UMo₅O₁₆ in P121

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

Unit cell

Lattice constants
a = 12.253 Å, b = 4.134 Å, c = 7.182 Å; α = 90.00°, β = 126.08°, γ = 90.00°
Cell volume
294.0 ų
Atoms in the conventional cell
22 (Mo 5, O 16, U 1)
Formula units Z
1
Pearson symbol
mP22 — monoclinic, primitive lattice, 22 atoms per conventional cell
Symmetry operations
2 per cell

Crystallographic sites

SiteElementWyckoffMultiplicityxyz
Mo1Mo1a10.00000.89190.0000
O2O1a10.00000.48000.0000
O3O1b10.00000.49900.5000
U4U1b10.00000.00000.5000
Mo5Mo2e20.31990.89970.0688
Mo6Mo2e20.68020.09390.4302
O7O2e20.12500.99300.9240
O8O2e20.87700.99300.6780
O9O2e20.25000.01300.7500
O10O2e20.34900.95900.3470
O11O2e20.32000.48600.0670
O12O2e20.68600.49700.4370
O13O2e20.50100.00100.1920

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 22 atoms drawn above are these sites multiplied by all 2 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

A5B16C_mP22_3_a2e_ab7e_b-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol mP22, then the space-group number 3, then the Wyckoff letters occupied by each element in turn (Mo: 1a; O: 1a; O: 1b; U: 1b; Mo: 2e; Mo: 2e; O: 2e; O: 2e; O: 2e; O: 2e; O: 2e; O: 2e; O: 2e). Two structures with the same label are the same arrangement with different cell parameters or coordinates.

Note: monoclinic.

Source

Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry A5B16C_mP22_3_a2e_ab7e_b-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.

← Pb₃TeCo₃P₂O₁₄  ·  Space group P121 (4 prototypes)  ·  All prototypes  ·  β-KYb₂F₇ — F₇KYb₂ →