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Crystal Lab › Prototype structures › Monoclinic

Clinocervantite (β-Sb₂O₄)

Monoclinic · space group C12/c1 (No. 15) · Pearson mC24 · mineral: clinocervantite

Symmetry elements and Wyckoff positions (interactive)

Clinocervantite (β-Sb₂O₄) in C12/c1

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

Unit cell

Lattice constants
a = 14.228 Å, b = 4.836 Å, c = 12.040 Å; α = 90.00°, β = 158.34°, γ = 90.00°
Cell volume
305.8 ų
Atoms in the conventional cell
24 (Sb 8, O 16)
Formula units Z
8
Pearson symbol
mC24 — monoclinic, base-centred lattice, 24 atoms per conventional cell
Symmetry operations
8 per cell

Crystallographic sites

SiteElementWyckoffMultiplicityxyz
Sb3Sb4a40.00000.00000.0000
Sb4Sb4e40.00000.46490.2500
O1O8f80.73280.80170.7910
O2O8f80.12100.16220.2771

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 24 atoms drawn above are these sites multiplied by all 8 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

A2B_mC24_15_2f_ae-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol mC24, then the space-group number 15, then the Wyckoff letters occupied by each element in turn (Sb: 4a; Sb: 4e; O: 8f; O: 8f). Two structures with the same label are the same arrangement with different cell parameters or coordinates.

Note: Clinocervantite, \beta-Sb₂O₄.

Source

Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry A2B_mC24_15_2f_ae-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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