Sc3(CuGe)4 crystallizes in the orthorhombic Immm space group. There are two inequivalent Sc sites. In the first Sc site, Sc(1) is bonded to two equivalent Ge(1) and four equivalent Ge(2) atoms to form edge-sharing ScGe6 octahedra. In the second Sc site, Sc(2) is bonded in a 12-coordinate geometry to six equivalent Cu(1), two equivalent Ge(1), and four equivalent Ge(2) atoms. Cu(1) is bonded in a 8-coordinate geometry to three equivalent Sc(2), one Cu(1), one Ge(2), and three equivalent Ge(1) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to one Sc(1), two equivalent Sc(2), and six equivalent Cu(1) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Sc(1), four equivalent Sc(2), two equivalent Cu(1), and one Ge(2) atom.
Sc3(CuGe)4 crystallizes in the orthorhombic Immm space group. There are two inequivalent Sc sites. In the first Sc site, Sc(1) is bonded to two equivalent Ge(1) and four equivalent Ge(2) atoms to form edge-sharing ScGe6 octahedra. Both Sc(1)-Ge(1) bond lengths are 2.89 Å. All Sc(1)-Ge(2) bond lengths are 2.85 Å. In the second Sc site, Sc(2) is bonded in a 12-coordinate geometry to six equivalent Cu(1), two equivalent Ge(1), and four equivalent Ge(2) atoms. There are four shorter (2.91 Å) and two longer (2.97 Å) Sc(2)-Cu(1) bond lengths. Both Sc(2)-Ge(1) bond lengths are 2.92 Å. All Sc(2)-Ge(2) bond lengths are 2.93 Å. Cu(1) is bonded in a 8-coordinate geometry to three equivalent Sc(2), one Cu(1), one Ge(2), and three equivalent Ge(1) atoms. The Cu(1)-Cu(1) bond length is 2.53 Å. The Cu(1)-Ge(2) bond length is 2.42 Å. There are two shorter (2.46 Å) and one longer (2.50 Å) Cu(1)-Ge(1) bond length. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to one Sc(1), two equivalent Sc(2), and six equivalent Cu(1) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Sc(1), four equivalent Sc(2), two equivalent Cu(1), and one Ge(2) atom. The Ge(2)-Ge(2) bond length is 2.53 Å.