U₂Co₃Si₅

Unit cell

Lattice constants

a = 11.130 Å, b = 9.590 Å, c = 5.617 Å; α = 90.00°, β = 90.00°, γ = 90.00°

Cell volume

599.5 ų

Atoms in the conventional cell

40 (Co 12, Si 20, U 8)

Formula units Z

4

Pearson symbol

oI40 — orthorhombic, body-centred lattice, 40 atoms per conventional cell

Symmetry operations

16 per cell

Crystallographic sites

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 40 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

A3B5C2_oI40_72_aj_bfj_j-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol oI40, then the space-group number 72, then the Wyckoff letters occupied by each element in turn (Co: 4a; Si: 4b; Si: 8f; Co: 8j; Si: 8j; U: 8j). Two structures with the same label are the same arrangement with different cell parameters or coordinates.

Other compounds with this structure

Ce₂Co₃Si₅, Ce₂Pt₃Si₅, Ce₂Rh₃Ge₅, Ce₂Ru₃Ge₅, Dy₂Ni₃Si₅, Gd₂Ru₃Ge₅, Ho₂Ni₃Si₅, La₂Ru₃Ge₅, Li₂Ir₃Si₅, Lu₂Ir₃Si₅, Lu₂Ru₃Si₅, Nd₂Ru₃Ge₅, Pu₂Pt₃Si₅, Tb₂Ni₃Si₅, Tb₂Ru₃Ge₅, Y₂Ni₃Si₅ <!--beginning with an

Source

Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry A3B5C2_oI40_72_aj_bfj_j-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.