Lu5Ir4Ge10 crystallizes in the tetragonal P4/mbm space group. There are three inequivalent Lu sites. In the first Lu site, Lu(1) is bonded in a 16-coordinate geometry to four equivalent Ir(1), four equivalent Ge(2), and eight equivalent Ge(3) atoms. In the second Lu site, Lu(2) is bonded to four equivalent Ir(1), two equivalent Ge(1), two equivalent Ge(3), and four equivalent Ge(2) atoms to form face-sharing LuGe8Ir4 cuboctahedra. In the third Lu site, Lu(3) is bonded in a 14-coordinate geometry to four equivalent Ir(1), two equivalent Ge(3), four equivalent Ge(1), and four equivalent Ge(2) atoms. Ir(1) is bonded in a 10-coordinate geometry to one Lu(1), two equivalent Lu(2), two equivalent Lu(3), one Ge(1), two equivalent Ge(2), and two equivalent Ge(3) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to two equivalent Lu(2), four equivalent Lu(3), two equivalent Ir(1), and one Ge(1) atom. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to one Lu(1), two equivalent Lu(2), two equivalent Lu(3), two equivalent Ir(1), and one Ge(2) atom. In the third Ge site, Ge(3) is bonded in a 8-coordinate geometry to one Lu(2), one Lu(3), two equivalent Lu(1), two equivalent Ir(1), and two equivalent Ge(3) atoms.
Lu5Ir4Ge10 crystallizes in the tetragonal P4/mbm space group. There are three inequivalent Lu sites. In the first Lu site, Lu(1) is bonded in a 16-coordinate geometry to four equivalent Ir(1), four equivalent Ge(2), and eight equivalent Ge(3) atoms. All Lu(1)-Ir(1) bond lengths are 3.22 Å. All Lu(1)-Ge(2) bond lengths are 3.35 Å. All Lu(1)-Ge(3) bond lengths are 2.94 Å. In the second Lu site, Lu(2) is bonded to four equivalent Ir(1), two equivalent Ge(1), two equivalent Ge(3), and four equivalent Ge(2) atoms to form face-sharing LuGe8Ir4 cuboctahedra. All Lu(2)-Ir(1) bond lengths are 3.10 Å. Both Lu(2)-Ge(1) bond lengths are 2.92 Å. Both Lu(2)-Ge(3) bond lengths are 3.09 Å. All Lu(2)-Ge(2) bond lengths are 3.03 Å. In the third Lu site, Lu(3) is bonded in a 14-coordinate geometry to four equivalent Ir(1), two equivalent Ge(3), four equivalent Ge(1), and four equivalent Ge(2) atoms. All Lu(3)-Ir(1) bond lengths are 3.31 Å. Both Lu(3)-Ge(3) bond lengths are 3.39 Å. All Lu(3)-Ge(1) bond lengths are 3.26 Å. All Lu(3)-Ge(2) bond lengths are 3.27 Å. Ir(1) is bonded in a 10-coordinate geometry to one Lu(1), two equivalent Lu(2), two equivalent Lu(3), one Ge(1), two equivalent Ge(2), and two equivalent Ge(3) atoms. The Ir(1)-Ge(1) bond length is 2.50 Å. There is one shorter (2.47 Å) and one longer (2.57 Å) Ir(1)-Ge(2) bond length. Both Ir(1)-Ge(3) bond lengths are 2.47 Å. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to two equivalent Lu(2), four equivalent Lu(3), two equivalent Ir(1), and one Ge(1) atom. The Ge(1)-Ge(1) bond length is 2.43 Å. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to one Lu(1), two equivalent Lu(2), two equivalent Lu(3), two equivalent Ir(1), and one Ge(2) atom. The Ge(2)-Ge(2) bond length is 2.50 Å. In the third Ge site, Ge(3) is bonded in a 8-coordinate geometry to one Lu(2), one Lu(3), two equivalent Lu(1), two equivalent Ir(1), and two equivalent Ge(3) atoms. Both Ge(3)-Ge(3) bond lengths are 2.84 Å.