SmCu2Ge2 crystallizes in the tetragonal I4/mmm space group. Sm(1) is bonded in a 16-coordinate geometry to eight equivalent Cu(1) and eight equivalent Ge(1) atoms. Cu(1) is bonded to four equivalent Sm(1) and four equivalent Ge(1) atoms to form a mixture of distorted edge, face, and corner-sharing CuSm4Ge4 tetrahedra. Ge(1) is bonded in a 9-coordinate geometry to four equivalent Sm(1), four equivalent Cu(1), and one Ge(1) atom.
SmCu2Ge2 crystallizes in the tetragonal I4/mmm space group. Sm(1) is bonded in a 16-coordinate geometry to eight equivalent Cu(1) and eight equivalent Ge(1) atoms. All Sm(1)-Cu(1) bond lengths are 3.27 Å. All Sm(1)-Ge(1) bond lengths are 3.15 Å. Cu(1) is bonded to four equivalent Sm(1) and four equivalent Ge(1) atoms to form a mixture of distorted edge, face, and corner-sharing CuSm4Ge4 tetrahedra. All Cu(1)-Ge(1) bond lengths are 2.42 Å. Ge(1) is bonded in a 9-coordinate geometry to four equivalent Sm(1), four equivalent Cu(1), and one Ge(1) atom. The Ge(1)-Ge(1) bond length is 2.49 Å.