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Crystal Lab › Prototype structures › Orthorhombic

Ba₅(Ir,Ru)₃O₁₂ [Ba₅IrRu₂O₁₂]

Orthorhombic · space group Pnma (No. 62) · Pearson oP80

Symmetry elements and Wyckoff positions (interactive)

Ba₅(Ir,Ru)₃O₁₂ [Ba₅IrRu₂O₁₂] in Pnma

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

Unit cell

Lattice constants
a = 10.853 Å, b = 5.897 Å, c = 19.819 Å; α = 90.00°, β = 90.00°, γ = 90.00°
Cell volume
1268.4 ų
Atoms in the conventional cell
80 (Ba 20, Ir 4, O 48, Ru 8)
Formula units Z
4
Pearson symbol
oP80 — orthorhombic, primitive lattice, 80 atoms per conventional cell
Symmetry operations
8 per cell

Crystallographic sites

SiteElementWyckoffMultiplicityxyz
Ba1Ba4c40.02710.25000.4268
Ba2Ba4c40.18600.25000.6305
Ba3Ba4c40.54770.25000.6757
Ba4Ba4c40.38750.25000.4686
Ba5Ba4c40.19590.25000.2539
Ir6Ir4c40.78470.25000.5565
O7O4c40.77900.25000.7550
O8O4c40.30600.25000.1420
O9O4c40.46700.25000.9180
O10O4c40.11100.25000.9760
Ru11Ru4c40.88100.25000.6740
Ru12Ru4c40.69490.25000.4302
O13O8d80.30900.47800.0182
O14O8d80.51300.98200.2070
O15O8d80.09500.01500.1050
O16O8d80.26200.48600.8690

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 80 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

A5BC12D2_oP80_62_5c_c_4c4d_2c-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol oP80, then the space-group number 62, then the Wyckoff letters occupied by each element in turn (Ba: 4c; Ba: 4c; Ba: 4c; Ba: 4c; Ba: 4c; Ir: 4c; O: 4c; O: 4c; O: 4c; O: 4c; Ru: 4c; Ru: 4c; O: 8d; O: 8d; O: 8d; O: 8d). Two structures with the same label are the same arrangement with different cell parameters or coordinates.

Other compounds with this structure

Ba₅(Ru_{2.8}P_{0.2})₃O₁₂ <!--beginning with an

Source

Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry A5BC12D2_oP80_62_5c_c_4c4d_2c-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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