Sc11Ge10 crystallizes in the tetragonal I4/mmm space group. There are four inequivalent Sc sites. In the first Sc site, Sc(1) is bonded to one Ge(1), one Ge(2), one Ge(4), and four equivalent Ge(5) atoms to form a mixture of distorted edge, corner, and face-sharing ScGe7 pentagonal bipyramids. In the second Sc site, Sc(2) is bonded in a 7-coordinate geometry to one Ge(3), two equivalent Ge(1), two equivalent Ge(2), and two equivalent Ge(5) atoms. In the third Sc site, Sc(3) is bonded in a 9-coordinate geometry to one Ge(2), four equivalent Ge(3), and four equivalent Ge(5) atoms. In the fourth Sc site, Sc(4) is bonded in a 7-coordinate geometry to one Ge(4), two equivalent Ge(1), two equivalent Ge(3), and two equivalent Ge(5) atoms. There are five inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to two equivalent Sc(1), two equivalent Sc(2), and four equivalent Sc(4) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to one Sc(3), four equivalent Sc(1), and four equivalent Sc(2) atoms. In the third Ge site, Ge(3) is bonded in a 11-coordinate geometry to one Sc(2), two equivalent Sc(3), four equivalent Sc(4), two equivalent Ge(3), and two equivalent Ge(5) atoms. In the fourth Ge site, Ge(4) is bonded in a 8-coordinate geometry to four equivalent Sc(1) and four equivalent Sc(4) atoms. In the fifth Ge site, Ge(5) is bonded in a 9-coordinate geometry to one Sc(2), one Sc(3), two equivalent Sc(4), four equivalent Sc(1), one Ge(3), and one Ge(5) atom.
Sc11Ge10 crystallizes in the tetragonal I4/mmm space group. There are four inequivalent Sc sites. In the first Sc site, Sc(1) is bonded to one Ge(1), one Ge(2), one Ge(4), and four equivalent Ge(5) atoms to form a mixture of distorted edge, corner, and face-sharing ScGe7 pentagonal bipyramids. The Sc(1)-Ge(1) bond length is 3.10 Å. The Sc(1)-Ge(2) bond length is 2.83 Å. The Sc(1)-Ge(4) bond length is 2.72 Å. There are two shorter (2.97 Å) and two longer (3.05 Å) Sc(1)-Ge(5) bond lengths. In the second Sc site, Sc(2) is bonded in a 7-coordinate geometry to one Ge(3), two equivalent Ge(1), two equivalent Ge(2), and two equivalent Ge(5) atoms. The Sc(2)-Ge(3) bond length is 2.90 Å. Both Sc(2)-Ge(1) bond lengths are 2.59 Å. Both Sc(2)-Ge(2) bond lengths are 3.12 Å. Both Sc(2)-Ge(5) bond lengths are 3.22 Å. In the third Sc site, Sc(3) is bonded in a 9-coordinate geometry to one Ge(2), four equivalent Ge(3), and four equivalent Ge(5) atoms. The Sc(3)-Ge(2) bond length is 3.41 Å. All Sc(3)-Ge(3) bond lengths are 3.08 Å. All Sc(3)-Ge(5) bond lengths are 3.02 Å. In the fourth Sc site, Sc(4) is bonded in a 7-coordinate geometry to one Ge(4), two equivalent Ge(1), two equivalent Ge(3), and two equivalent Ge(5) atoms. The Sc(4)-Ge(4) bond length is 2.88 Å. Both Sc(4)-Ge(1) bond lengths are 2.78 Å. Both Sc(4)-Ge(3) bond lengths are 2.91 Å. Both Sc(4)-Ge(5) bond lengths are 2.74 Å. There are five inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to two equivalent Sc(1), two equivalent Sc(2), and four equivalent Sc(4) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to one Sc(3), four equivalent Sc(1), and four equivalent Sc(2) atoms. In the third Ge site, Ge(3) is bonded in a 11-coordinate geometry to one Sc(2), two equivalent Sc(3), four equivalent Sc(4), two equivalent Ge(3), and two equivalent Ge(5) atoms. Both Ge(3)-Ge(3) bond lengths are 2.56 Å. Both Ge(3)-Ge(5) bond lengths are 2.99 Å. In the fourth Ge site, Ge(4) is bonded in a 8-coordinate geometry to four equivalent Sc(1) and four equivalent Sc(4) atoms. In the fifth Ge site, Ge(5) is bonded in a 9-coordinate geometry to one Sc(2), one Sc(3), two equivalent Sc(4), four equivalent Sc(1), one Ge(3), and one Ge(5) atom. The Ge(5)-Ge(5) bond length is 2.52 Å.