CeAlSi is hexagonal omega structure-derived structured and crystallizes in the tetragonal I4_1md space group. Ce(1) is bonded to six equivalent Al(1) and six equivalent Si(1) atoms to form a mixture of edge and face-sharing CeAl6Si6 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 Ce(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 Ce(1) and three equivalent Si(1) atoms. Si(1) is bonded in a distorted trigonal planar geometry to six equivalent Ce(1) and three Al(1,1) atoms.
CeAlSi is hexagonal omega structure-derived structured and crystallizes in the tetragonal I4_1md space group. Ce(1) is bonded to six equivalent Al(1) and six equivalent Si(1) atoms to form a mixture of edge and face-sharing CeAl6Si6 cuboctahedra. All Ce(1)-Al(1) bond lengths are 3.24 Å. There are four shorter (3.23 Å) and two longer (3.25 Å) Ce(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 Ce(1) and three equivalent Si(1) atoms. There is one shorter (2.44 Å) and two longer (2.45 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 Ce(1) and three equivalent Si(1) atoms. All Al(1)-Ce(1) bond lengths are 3.24 Å. There is one shorter (2.44 Å) and two longer (2.45 Å) Al(1)-Si(1) bond lengths. Si(1) is bonded in a distorted trigonal planar geometry to six equivalent Ce(1) and three Al(1,1) atoms.