UIr2Ge2 crystallizes in the tetragonal P4/nmm space group. U(1) is bonded in a 16-coordinate geometry to four equivalent Ir(1), four equivalent Ir(2), four equivalent Ge(1), and four equivalent Ge(2) atoms. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded to four equivalent U(1) and four equivalent Ge(2) atoms to form distorted IrU4Ge4 tetrahedra that share corners with twelve equivalent Ge(1)U4Ir4 tetrahedra, edges with two equivalent Ge(1)U4Ir4 tetrahedra, edges with four equivalent Ir(1)U4Ge4 tetrahedra, and faces with four equivalent Ir(1)U4Ge4 tetrahedra. In the second Ir site, Ir(2) is bonded in a 9-coordinate geometry to four equivalent U(1), one Ge(2), and four equivalent Ge(1) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to four equivalent U(1) and four equivalent Ir(2) atoms to form distorted GeU4Ir4 tetrahedra that share corners with twelve equivalent Ir(1)U4Ge4 tetrahedra, edges with two equivalent Ir(1)U4Ge4 tetrahedra, edges with four equivalent Ge(1)U4Ir4 tetrahedra, and faces with four equivalent Ge(1)U4Ir4 tetrahedra. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to four equivalent U(1), one Ir(2), and four equivalent Ir(1) atoms.
UIr2Ge2 crystallizes in the tetragonal P4/nmm space group. U(1) is bonded in a 16-coordinate geometry to four equivalent Ir(1), four equivalent Ir(2), four equivalent Ge(1), and four equivalent Ge(2) atoms. All U(1)-Ir(1) bond lengths are 3.36 Å. All U(1)-Ir(2) bond lengths are 3.18 Å. All U(1)-Ge(1) bond lengths are 3.24 Å. All U(1)-Ge(2) bond lengths are 3.23 Å. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded to four equivalent U(1) and four equivalent Ge(2) atoms to form distorted IrU4Ge4 tetrahedra that share corners with twelve equivalent Ge(1)U4Ir4 tetrahedra, edges with two equivalent Ge(1)U4Ir4 tetrahedra, edges with four equivalent Ir(1)U4Ge4 tetrahedra, and faces with four equivalent Ir(1)U4Ge4 tetrahedra. All Ir(1)-Ge(2) bond lengths are 2.50 Å. In the second Ir site, Ir(2) is bonded in a 9-coordinate geometry to four equivalent U(1), one Ge(2), and four equivalent Ge(1) atoms. The Ir(2)-Ge(2) bond length is 2.40 Å. All Ir(2)-Ge(1) bond lengths are 2.49 Å. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to four equivalent U(1) and four equivalent Ir(2) atoms to form distorted GeU4Ir4 tetrahedra that share corners with twelve equivalent Ir(1)U4Ge4 tetrahedra, edges with two equivalent Ir(1)U4Ge4 tetrahedra, edges with four equivalent Ge(1)U4Ir4 tetrahedra, and faces with four equivalent Ge(1)U4Ir4 tetrahedra. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to four equivalent U(1), one Ir(2), and four equivalent Ir(1) atoms.