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Crystal Lab › Prototype structures › Orthorhombic

CsB₉O₁₄

Orthorhombic · space group P2221 (No. 17) · Pearson oP96

Symmetry elements and Wyckoff positions (interactive)

CsB₉O₁₄ in P2221

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

Unit cell

Lattice constants
a = 8.806 Å, b = 8.753 Å, c = 15.792 Å; α = 90.00°, β = 90.00°, γ = 90.00°
Cell volume
1217.2 ų
Atoms in the conventional cell
96 (Cs 4, B 36, O 56)
Formula units Z
4
Pearson symbol
oP96 — orthorhombic, primitive lattice, 96 atoms per conventional cell
Symmetry operations
4 per cell

Crystallographic sites

SiteElementWyckoffMultiplicityxyz
Cs10Cs2a20.52590.00000.0000
Cs11Cs2c20.00000.50840.2500
B1B4e40.33440.13480.8118
B2B4e40.43840.38390.8680
B3B4e40.28890.86740.7789
B4B4e40.17420.07210.7000
B5B4e40.36200.34700.1255
B6B4e40.87810.32140.0529
B7B4e40.62380.42160.1095
B8B4e40.14690.27840.0271
B9B4e40.95820.17880.9332
O12O4e40.23240.17840.7475
O13O4e40.29330.72300.7997
O14O4e40.32840.48860.8662
O15O4e40.42390.23030.8544
O16O4e40.35580.98070.8248
O17O4e40.20260.91580.7082
O18O4e40.06750.10090.6398
O19O4e40.59260.57570.1143
O20O4e40.84290.22280.9877
O21O4e40.29370.28900.0476
O22O4e40.52540.31160.1169
O23O4e40.77840.39420.0995
O24O4e40.03160.33620.0749
O25O4e40.10750.20430.9530

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 96 atoms drawn above are these sites multiplied by all 4 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

A9BC14_oP96_17_9e_ac_14e-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol oP96, then the space-group number 17, then the Wyckoff letters occupied by each element in turn (Cs: 2a; Cs: 2c; B: 4e; B: 4e; B: 4e; B: 4e; B: 4e; B: 4e; B: 4e; B: 4e; B: 4e; O: 4e; O: 4e; O: 4e; O: 4e; O: 4e; O: 4e; O: 4e; O: 4e; O: 4e; O: 4e; O: 4e; O: 4e; O: 4e; O: 4e). 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 A9BC14_oP96_17_9e_ac_14e-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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