DyAlSi crystallizes in the tetragonal I4_1md space group. Dy(1) is bonded to six equivalent Al(1) and six equivalent Si(1) atoms to form a mixture of face and edge-sharing DyAl6Si6 cuboctahedra. Al(1) is bonded in a distorted trigonal planar geometry to six equivalent Dy(1) and three equivalent Si(1) atoms. Si(1) is bonded in a distorted trigonal planar geometry to six equivalent Dy(1) and three equivalent Al(1) atoms.
DyAlSi crystallizes in the tetragonal I4_1md space group. Dy(1) is bonded to six equivalent Al(1) and six equivalent Si(1) atoms to form a mixture of face and edge-sharing DyAl6Si6 cuboctahedra. There are four shorter (3.14 Å) and two longer (3.16 Å) Dy(1)-Al(1) bond lengths. There are four shorter (3.12 Å) and two longer (3.19 Å) Dy(1)-Si(1) bond lengths. Al(1) is bonded in a distorted trigonal planar geometry to six equivalent Dy(1) and three equivalent Si(1) atoms. All Al(1)-Si(1) bond lengths are 2.39 Å. Si(1) is bonded in a distorted trigonal planar geometry to six equivalent Dy(1) and three equivalent Al(1) atoms.