La5Ir3 crystallizes in the tetragonal P4/ncc space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 5-coordinate geometry to two equivalent Ir(2) and three equivalent Ir(1) atoms. In the second La site, La(2) is bonded to four equivalent Ir(1) atoms to form edge-sharing LaIr4 tetrahedra. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a 8-coordinate geometry to two equivalent La(2) and six equivalent La(1) atoms. In the second Ir site, Ir(2) is bonded in a 8-coordinate geometry to eight equivalent La(1) atoms.
La5Ir3 crystallizes in the tetragonal P4/ncc space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 5-coordinate geometry to two equivalent Ir(2) and three equivalent Ir(1) atoms. There is one shorter (3.02 Å) and one longer (3.13 Å) La(1)-Ir(2) bond length. There are a spread of La(1)-Ir(1) bond distances ranging from 2.91-3.39 Å. In the second La site, La(2) is bonded to four equivalent Ir(1) atoms to form edge-sharing LaIr4 tetrahedra. All La(2)-Ir(1) bond lengths are 2.99 Å. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a 8-coordinate geometry to two equivalent La(2) and six equivalent La(1) atoms. In the second Ir site, Ir(2) is bonded in a 8-coordinate geometry to eight equivalent La(1) atoms.