YCu2Ge2 crystallizes in the tetragonal I4/mmm space group. Y(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 Y(1) and four equivalent Ge(1) atoms to form a mixture of distorted edge, face, and corner-sharing CuY4Ge4 tetrahedra. Ge(1) is bonded in a 9-coordinate geometry to four equivalent Y(1), four equivalent Cu(1), and one Ge(1) atom.
YCu2Ge2 crystallizes in the tetragonal I4/mmm space group. Y(1) is bonded in a 16-coordinate geometry to eight equivalent Cu(1) and eight equivalent Ge(1) atoms. All Y(1)-Cu(1) bond lengths are 3.26 Å. All Y(1)-Ge(1) bond lengths are 3.10 Å. Cu(1) is bonded to four equivalent Y(1) and four equivalent Ge(1) atoms to form a mixture of distorted edge, face, and corner-sharing CuY4Ge4 tetrahedra. All Cu(1)-Ge(1) bond lengths are 2.42 Å. Ge(1) is bonded in a 9-coordinate geometry to four equivalent Y(1), four equivalent Cu(1), and one Ge(1) atom. The Ge(1)-Ge(1) bond length is 2.45 Å.