Sm2(IrGe)3 crystallizes in the tetragonal P4/mmm space group. Sm(1) is bonded in a 6-coordinate geometry to four equivalent Sm(1), one Ir(1), and one Ge(1) atom. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a distorted linear geometry to one Sm(1) and one Ge(2) atom. In the second Ir site, Ir(2) is bonded in a distorted linear geometry to two equivalent Ge(1) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one Sm(1), one Ir(2), and four equivalent Ge(1) atoms to form a mixture of distorted edge and corner-sharing GeSmGe4Ir octahedra. The corner-sharing octahedra are not tilted. In the second Ge site, Ge(2) is bonded in a distorted linear geometry to two equivalent Ir(1) atoms.
Sm2(IrGe)3 crystallizes in the tetragonal P4/mmm space group. Sm(1) is bonded in a 6-coordinate geometry to four equivalent Sm(1), one Ir(1), and one Ge(1) atom. All Sm(1)-Sm(1) bond lengths are 2.84 Å. The Sm(1)-Ir(1) bond length is 2.63 Å. The Sm(1)-Ge(1) bond length is 3.15 Å. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a distorted linear geometry to one Sm(1) and one Ge(2) atom. The Ir(1)-Ge(2) bond length is 2.39 Å. In the second Ir site, Ir(2) is bonded in a distorted linear geometry to two equivalent Ge(1) atoms. Both Ir(2)-Ge(1) bond lengths are 2.39 Å. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one Sm(1), one Ir(2), and four equivalent Ge(1) atoms to form a mixture of distorted edge and corner-sharing GeSmGe4Ir octahedra. The corner-sharing octahedra are not tilted. All Ge(1)-Ge(1) bond lengths are 2.84 Å. In the second Ge site, Ge(2) is bonded in a distorted linear geometry to two equivalent Ir(1) atoms.