Sc(FeGe)6 crystallizes in the hexagonal P6/mmm space group. Sc(1) is bonded to twelve equivalent Fe(1), two equivalent Ge(3), and six equivalent Ge(2) atoms to form distorted face-sharing ScFe12Ge8 hexagonal bipyramids. Fe(1) is bonded in a 12-coordinate geometry to two equivalent Sc(1), four equivalent Fe(1), two equivalent Ge(1), two equivalent Ge(2), and two equivalent Ge(3) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 6-coordinate geometry to six equivalent Fe(1) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to three equivalent Sc(1) and six equivalent Fe(1) atoms. In the third Ge site, Ge(3) is bonded in a 8-coordinate geometry to one Sc(1), six equivalent Fe(1), and one Ge(3) atom.
Sc(FeGe)6 crystallizes in the hexagonal P6/mmm space group. Sc(1) is bonded to twelve equivalent Fe(1), two equivalent Ge(3), and six equivalent Ge(2) atoms to form distorted face-sharing ScFe12Ge8 hexagonal bipyramids. All Sc(1)-Fe(1) bond lengths are 3.24 Å. Both Sc(1)-Ge(3) bond lengths are 2.79 Å. All Sc(1)-Ge(2) bond lengths are 2.92 Å. Fe(1) is bonded in a 12-coordinate geometry to two equivalent Sc(1), four equivalent Fe(1), two equivalent Ge(1), two equivalent Ge(2), and two equivalent Ge(3) atoms. All Fe(1)-Fe(1) bond lengths are 2.53 Å. Both Fe(1)-Ge(1) bond lengths are 2.51 Å. Both Fe(1)-Ge(2) bond lengths are 2.50 Å. Both Fe(1)-Ge(3) bond lengths are 2.64 Å. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 6-coordinate geometry to six equivalent Fe(1) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to three equivalent Sc(1) and six equivalent Fe(1) atoms. In the third Ge site, Ge(3) is bonded in a 8-coordinate geometry to one Sc(1), six equivalent Fe(1), and one Ge(3) atom. The Ge(3)-Ge(3) bond length is 2.55 Å.