Materials Data on Sm(Re2Si)2 by Materials Project
Sm(Re2Si)2 crystallizes in the tetragonal P4_2/mnm space group. The structure is three-dimensional. Sm is bonded in a 6-coordinate geometry to twelve equivalent Re and six equivalent Si atoms. There are four shorter (3.25 Å) and eight longer (3.37 Å) Sm–Re bond lengths. There are four shorter (3.03 Å) and two longer (3.07 Å) Sm–Si bond lengths. Re is bonded to three equivalent Sm, six equivalent Re, and three equivalent Si atoms to form a mixture of distorted corner, edge, and face-sharing ReSm3Re6Si3 cuboctahedra. There are a spread of Re–Re bond distances ranging from 2.63–2.83 Å. There are one shorter (2.46 Å) and two longer (2.58 Å) Re–Si bond lengths. Si is bonded in a 9-coordinate geometry to three equivalent Sm and six equivalent Re atoms.