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Crystal Lab › Prototype structures › Orthorhombic

Orthorhombic Fullerene (Cs₃C₆₀)

Orthorhombic · space group Immm (No. 71) · Pearson oI128

Symmetry elements and Wyckoff positions (interactive)

Orthorhombic Fullerene (Cs₃C₆₀) in Immm

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

Unit cell

Lattice constants
a = 11.843 Å, b = 12.220 Å, c = 11.464 Å; α = 90.00°, β = 90.00°, γ = 90.00°
Cell volume
1659.1 ų
Atoms in the conventional cell
128 (Cs 8, C 120)
Formula units Z
8
Pearson symbol
oI128 — orthorhombic, body-centred lattice, 128 atoms per conventional cell
Symmetry operations
16 per cell

Crystallographic sites

SiteElementWyckoffMultiplicityxyz
Cs11Cs4e40.70800.00000.0000
Cs10Cs4g40.00000.74900.0000
C2C8l80.00000.71400.5630
C1C8m80.60800.00000.8050
C3C8n80.79500.44100.0000
C4C16o160.59800.25000.1260
C5C16o160.62200.40500.2660
C6C16o160.75800.38200.1020
C7C16o160.69700.28700.0630
C8C16o160.56100.30900.2270
C9C16o160.72000.44100.2030

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 128 atoms drawn above are these sites multiplied by all 16 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

A15B_oI128_71_lmn6o_eg-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol oI128, then the space-group number 71, then the Wyckoff letters occupied by each element in turn (Cs: 4e; Cs: 4g; C: 8l; C: 8m; C: 8n; C: 16o; C: 16o; C: 16o; C: 16o; C: 16o; C: 16o). Two structures with the same label are the same arrangement with different cell parameters or coordinates.

Note: Orthorhombic Fullerene.

Source

Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry A15B_oI128_71_lmn6o_eg-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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