Pu5Ir3 crystallizes in the tetragonal I4/mcm space group. There are two inequivalent Pu sites. In the first Pu site, Pu(1) is bonded in a 4-coordinate geometry to four equivalent Ir(2) atoms. In the second Pu site, Pu(2) is bonded in a 6-coordinate geometry to two equivalent Ir(1) and four equivalent Ir(2) atoms. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a 10-coordinate geometry to eight equivalent Pu(2) and two equivalent Ir(1) atoms. In the second Ir site, Ir(2) is bonded in a 10-coordinate geometry to two equivalent Pu(1) and eight equivalent Pu(2) atoms.
Pu5Ir3 crystallizes in the tetragonal I4/mcm space group. There are two inequivalent Pu sites. In the first Pu site, Pu(1) is bonded in a 4-coordinate geometry to four equivalent Ir(2) atoms. All Pu(1)-Ir(2) bond lengths are 2.94 Å. In the second Pu site, Pu(2) is bonded in a 6-coordinate geometry to two equivalent Ir(1) and four equivalent Ir(2) atoms. Both Pu(2)-Ir(1) bond lengths are 2.98 Å. There are a spread of Pu(2)-Ir(2) bond distances ranging from 2.89-3.20 Å. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a 10-coordinate geometry to eight equivalent Pu(2) and two equivalent Ir(1) atoms. Both Ir(1)-Ir(1) bond lengths are 2.79 Å. In the second Ir site, Ir(2) is bonded in a 10-coordinate geometry to two equivalent Pu(1) and eight equivalent Pu(2) atoms.