Sc7(Mn3Ge4)2 crystallizes in the tetragonal I4/mmm space group. There are three inequivalent Sc sites. In the first Sc site, Sc(1) is bonded in a 7-coordinate geometry to one Ge(1), one Ge(2), one Ge(3), and four equivalent Ge(4) atoms. In the second Sc site, Sc(2) is bonded in a 9-coordinate geometry to four equivalent Mn(2), one Ge(1), and four equivalent Ge(4) atoms. In the third Sc site, Sc(3) is bonded in a 7-coordinate geometry to one Mn(2), two equivalent Ge(1), two equivalent Ge(3), and two equivalent Ge(4) atoms. There are two inequivalent Mn sites. In the first Mn site, Mn(2) is bonded in a 11-coordinate geometry to one Sc(3), two equivalent Sc(2), two equivalent Mn(2), four equivalent Mn(1), and two equivalent Ge(4) atoms. In the second Mn site, Mn(1) is bonded in a 5-coordinate geometry to two equivalent Mn(2), one Ge(2), two equivalent Ge(3), and two equivalent Ge(4) atoms. There are four inequivalent Ge sites. In the first Ge site, Ge(4) is bonded in a 10-coordinate geometry to one Sc(2), one Sc(3), four equivalent Sc(1), one Mn(2), two equivalent Mn(1), and one Ge(4) atom. In the second Ge site, Ge(1) is bonded in a 9-coordinate geometry to one Sc(2), four equivalent Sc(1), and four equivalent Sc(3) atoms. In the third Ge site, Ge(2) is bonded in a 8-coordinate geometry to four equivalent Sc(1) and four equivalent Mn(1) atoms. In the fourth Ge site, Ge(3) is bonded in a 9-coordinate geometry to two equivalent Sc(1), two equivalent Sc(3), four equivalent Mn(1), and one Ge(3) atom.
Sc7(Mn3Ge4)2 crystallizes in the tetragonal I4/mmm space group. There are three inequivalent Sc sites. In the first Sc site, Sc(1) is bonded in a 7-coordinate geometry to one Ge(1), one Ge(2), one Ge(3), and four equivalent Ge(4) atoms. The Sc(1)-Ge(1) bond length is 2.76 Å. The Sc(1)-Ge(2) bond length is 2.60 Å. The Sc(1)-Ge(3) bond length is 2.95 Å. There are two shorter (2.92 Å) and two longer (3.01 Å) Sc(1)-Ge(4) bond lengths. In the second Sc site, Sc(2) is bonded in a 9-coordinate geometry to four equivalent Mn(2), one Ge(1), and four equivalent Ge(4) atoms. All Sc(2)-Mn(2) bond lengths are 2.84 Å. The Sc(2)-Ge(1) bond length is 3.25 Å. All Sc(2)-Ge(4) bond lengths are 2.87 Å. In the third Sc site, Sc(3) is bonded in a 7-coordinate geometry to one Mn(2), two equivalent Ge(1), two equivalent Ge(3), and two equivalent Ge(4) atoms. The Sc(3)-Mn(2) bond length is 2.78 Å. Both Sc(3)-Ge(1) bond lengths are 2.96 Å. Both Sc(3)-Ge(3) bond lengths are 2.64 Å. Both Sc(3)-Ge(4) bond lengths are 2.85 Å. There are two inequivalent Mn sites. In the first Mn site, Mn(2) is bonded in a 11-coordinate geometry to one Sc(3), two equivalent Sc(2), two equivalent Mn(2), four equivalent Mn(1), and two equivalent Ge(4) atoms. Both Mn(2)-Mn(2) bond lengths are 2.49 Å. All Mn(2)-Mn(1) bond lengths are 2.66 Å. Both Mn(2)-Ge(4) bond lengths are 2.57 Å. In the second Mn site, Mn(1) is bonded in a 5-coordinate geometry to two equivalent Mn(2), one Ge(2), two equivalent Ge(3), and two equivalent Ge(4) atoms. The Mn(1)-Ge(2) bond length is 2.84 Å. Both Mn(1)-Ge(3) bond lengths are 2.56 Å. Both Mn(1)-Ge(4) bond lengths are 2.54 Å. There are four inequivalent Ge sites. In the first Ge site, Ge(4) is bonded in a 10-coordinate geometry to one Sc(2), one Sc(3), four equivalent Sc(1), one Mn(2), two equivalent Mn(1), and one Ge(4) atom. The Ge(4)-Ge(4) bond length is 2.74 Å. In the second Ge site, Ge(1) is bonded in a 9-coordinate geometry to one Sc(2), four equivalent Sc(1), and four equivalent Sc(3) atoms. In the third Ge site, Ge(2) is bonded in a 8-coordinate geometry to four equivalent Sc(1) and four equivalent Mn(1) atoms. In the fourth Ge site, Ge(3) is bonded in a 9-coordinate geometry to two equivalent Sc(1), two equivalent Sc(3), four equivalent Mn(1), and one Ge(3) atom. The Ge(3)-Ge(3) bond length is 2.50 Å.