Sm5Ir3 crystallizes in the tetragonal P4/ncc space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 5-coordinate geometry to two equivalent Ir(2) and three equivalent Ir(1) atoms. In the second Sm site, Sm(2) is bonded to four equivalent Ir(1) atoms to form edge-sharing SmIr4 tetrahedra. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a 8-coordinate geometry to two equivalent Sm(2) and six equivalent Sm(1) atoms. In the second Ir site, Ir(2) is bonded in a 8-coordinate geometry to eight equivalent Sm(1) atoms.
Sm5Ir3 crystallizes in the tetragonal P4/ncc space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 5-coordinate geometry to two equivalent Ir(2) and three equivalent Ir(1) atoms. There is one shorter (2.95 Å) and one longer (3.02 Å) Sm(1)-Ir(2) bond length. There are a spread of Sm(1)-Ir(1) bond distances ranging from 2.90-3.23 Å. In the second Sm site, Sm(2) is bonded to four equivalent Ir(1) atoms to form edge-sharing SmIr4 tetrahedra. All Sm(2)-Ir(1) bond lengths are 2.90 Å. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a 8-coordinate geometry to two equivalent Sm(2) and six equivalent Sm(1) atoms. In the second Ir site, Ir(2) is bonded in a 8-coordinate geometry to eight equivalent Sm(1) atoms.