ScFeGe2 crystallizes in the orthorhombic Pbam space group. There are two inequivalent Sc sites. In the first Sc site, Sc(1) is bonded in a 8-coordinate geometry to one Fe(2), one Ge(4), one Ge(5), two equivalent Ge(1), two equivalent Ge(2), and two equivalent Ge(3) atoms. In the second Sc site, Sc(2) is bonded in a 7-coordinate geometry to two equivalent Fe(2), two equivalent Ge(1), two equivalent Ge(2), and three equivalent Ge(4) atoms. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 6-coordinate geometry to one Fe(2), one Ge(2), one Ge(3), one Ge(4), one Ge(5), and two equivalent Ge(1) atoms. In the second Fe site, Fe(2) is bonded to two equivalent Sc(1), two equivalent Sc(2), two equivalent Fe(1), two equivalent Ge(1), two equivalent Ge(4), and two equivalent Ge(5) atoms to form a mixture of distorted face and edge-sharing FeSc4Fe2Ge6 cuboctahedra. There are five inequivalent Ge sites. In the first Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Sc(2), four equivalent Sc(1), two equivalent Fe(1), and one Ge(2) atom. In the second Ge site, Ge(3) is bonded in a 7-coordinate geometry to four equivalent Sc(1), two equivalent Fe(1), and one Ge(3) atom. In the third Ge site, Ge(4) is bonded in a 9-coordinate geometry to two equivalent Sc(1), three equivalent Sc(2), two equivalent Fe(1), and two equivalent Fe(2) atoms. In the fourth Ge site, Ge(5) is bonded in a 6-coordinate geometry to two equivalent Sc(1), two equivalent Fe(1), and two equivalent Fe(2) atoms. In the fifth Ge site, Ge(1) is bonded in a 7-coordinate geometry to one Sc(2), two equivalent Sc(1), one Fe(2), two equivalent Fe(1), and one Ge(1) atom.
ScFeGe2 crystallizes in the orthorhombic Pbam space group. There are two inequivalent Sc sites. In the first Sc site, Sc(1) is bonded in a 8-coordinate geometry to one Fe(2), one Ge(4), one Ge(5), two equivalent Ge(1), two equivalent Ge(2), and two equivalent Ge(3) atoms. The Sc(1)-Fe(2) bond length is 3.12 Å. The Sc(1)-Ge(4) bond length is 2.76 Å. The Sc(1)-Ge(5) bond length is 2.86 Å. There is one shorter (2.85 Å) and one longer (2.88 Å) Sc(1)-Ge(1) bond length. There is one shorter (2.86 Å) and one longer (2.88 Å) Sc(1)-Ge(2) bond length. There is one shorter (2.95 Å) and one longer (2.96 Å) Sc(1)-Ge(3) bond length. In the second Sc site, Sc(2) is bonded in a 7-coordinate geometry to two equivalent Fe(2), two equivalent Ge(1), two equivalent Ge(2), and three equivalent Ge(4) atoms. Both Sc(2)-Fe(2) bond lengths are 3.08 Å. Both Sc(2)-Ge(1) bond lengths are 2.77 Å. There is one shorter (2.78 Å) and one longer (2.81 Å) Sc(2)-Ge(2) bond length. There are a spread of Sc(2)-Ge(4) bond distances ranging from 2.85-2.91 Å. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 6-coordinate geometry to one Fe(2), one Ge(2), one Ge(3), one Ge(4), one Ge(5), and two equivalent Ge(1) atoms. The Fe(1)-Fe(2) bond length is 2.58 Å. The Fe(1)-Ge(2) bond length is 2.45 Å. The Fe(1)-Ge(3) bond length is 2.44 Å. The Fe(1)-Ge(4) bond length is 2.51 Å. The Fe(1)-Ge(5) bond length is 2.53 Å. There is one shorter (2.53 Å) and one longer (2.57 Å) Fe(1)-Ge(1) bond length. In the second Fe site, Fe(2) is bonded to two equivalent Sc(1), two equivalent Sc(2), two equivalent Fe(1), two equivalent Ge(1), two equivalent Ge(4), and two equivalent Ge(5) atoms to form a mixture of distorted face and edge-sharing FeSc4Fe2Ge6 cuboctahedra. Both Fe(2)-Ge(1) bond lengths are 2.55 Å. Both Fe(2)-Ge(4) bond lengths are 2.55 Å. Both Fe(2)-Ge(5) bond lengths are 2.55 Å. There are five inequivalent Ge sites. In the first Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Sc(2), four equivalent Sc(1), two equivalent Fe(1), and one Ge(2) atom. The Ge(2)-Ge(2) bond length is 2.59 Å. In the second Ge site, Ge(3) is bonded in a 7-coordinate geometry to four equivalent Sc(1), two equivalent Fe(1), and one Ge(3) atom. The Ge(3)-Ge(3) bond length is 2.57 Å. In the third Ge site, Ge(4) is bonded in a 9-coordinate geometry to two equivalent Sc(1), three equivalent Sc(2), two equivalent Fe(1), and two equivalent Fe(2) atoms. In the fourth Ge site, Ge(5) is bonded in a 6-coordinate geometry to two equivalent Sc(1), two equivalent Fe(1), and two equivalent Fe(2) atoms. In the fifth Ge site, Ge(1) is bonded in a 7-coordinate geometry to one Sc(2), two equivalent Sc(1), one Fe(2), two equivalent Fe(1), and one Ge(1) atom. The Ge(1)-Ge(1) bond length is 2.51 Å.