AlSiSm is hexagonal omega structure-derived structured and crystallizes in the tetragonal I4_1md space group. Sm(1) is bonded to six Al(1,1) and six equivalent Si(1) atoms to form a mixture of edge and face-sharing SmAl6Si6 cuboctahedra. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a distorted trigonal planar geometry to six equivalent Sm(1) and three equivalent Si(1) atoms. In the second Al site, Al(1) is bonded in a distorted trigonal planar geometry to six equivalent Sm(1) and three equivalent Si(1) atoms. Si(1) is bonded in a distorted trigonal planar geometry to six equivalent Sm(1) and three Al(1,1) atoms.
AlSiSm is hexagonal omega structure-derived structured and crystallizes in the tetragonal I4_1md space group. Sm(1) is bonded to six Al(1,1) and six equivalent Si(1) atoms to form a mixture of edge and face-sharing SmAl6Si6 cuboctahedra. All Sm(1)-Al(1,1) bond lengths are 3.19 Å. There are four shorter (3.18 Å) and two longer (3.21 Å) Sm(1)-Si(1) bond lengths. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a distorted trigonal planar geometry to six equivalent Sm(1) and three equivalent Si(1) atoms. There is one shorter (2.40 Å) and two longer (2.42 Å) Al(1)-Si(1) bond lengths. In the second Al site, Al(1) is bonded in a distorted trigonal planar geometry to six equivalent Sm(1) and three equivalent Si(1) atoms. There is one shorter (2.40 Å) and two longer (2.42 Å) Al(1)-Si(1) bond lengths. Si(1) is bonded in a distorted trigonal planar geometry to six equivalent Sm(1) and three Al(1,1) atoms.