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BaCo₂V₂O₈

Tetragonal · space group I41/acd (No. 142) · Pearson tI104

Symmetry elements and Wyckoff positions (interactive)

BaCo₂V₂O₈ in I41/acd

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

Unit cell

Lattice constants
a = 12.419 Å, b = 12.419 Å, c = 8.466 Å; α = 90.00°, β = 90.00°, γ = 90.00°
Cell volume
1305.7 ų
Atoms in the conventional cell
104 (Ba 8, V 16, Co 16, O 64)
Formula units Z
8
Pearson symbol
tI104 — tetragonal, body-centred lattice, 104 atoms per conventional cell
Symmetry operations
32 per cell

Crystallographic sites

SiteElementWyckoffMultiplicityxyz
Ba1Ba8a80.00000.25000.3750
V5V16e160.08000.00000.2500
Co2Co16f160.16890.41890.1250
O3O32g320.15700.07400.3830
O4O32g320.49800.08700.3470

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 104 atoms drawn above are these sites multiplied by all 32 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

AB2C8D2_tI104_142_a_f_2g_e-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol tI104, then the space-group number 142, then the Wyckoff letters occupied by each element in turn (Ba: 8a; V: 16e; Co: 16f; O: 32g; O: 32g). Two structures with the same label are the same arrangement with different cell parameters or coordinates.

Other compounds with this structure

BaMg₂V₂O₈, BaMn₂V₂O₈, BaMo₂V₂O₈, BaV₂Co₂O₈, PbNi₂V₂O₈ <!--beginning with an

Source

Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry AB2C8D2_tI104_142_a_f_2g_e-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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