ScCoGe2 crystallizes in the orthorhombic Pbam space group. There are two inequivalent Sc sites. In the first Sc site, Sc(1) is bonded in a 7-coordinate geometry to two equivalent Co(1), two equivalent Ge(2), two equivalent Ge(4), and three equivalent Ge(5) atoms. In the second Sc site, Sc(2) is bonded in a 12-coordinate geometry to one Co(1), three equivalent Co(2), one Ge(3), one Ge(5), two equivalent Ge(1), two equivalent Ge(2), and two equivalent Ge(4) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent Sc(1), two equivalent Sc(2), two equivalent Co(2), two equivalent Ge(3), two equivalent Ge(4), and two equivalent Ge(5) atoms to form a mixture of distorted face and edge-sharing CoSc4Co2Ge6 cuboctahedra. In the second Co site, Co(2) is bonded in a 6-coordinate geometry to three equivalent Sc(2), one Co(1), one Ge(1), one Ge(2), one Ge(3), one Ge(5), and two equivalent Ge(4) atoms. There are five inequivalent Ge sites. In the first Ge site, Ge(3) is bonded in a 6-coordinate geometry to two equivalent Sc(2), two equivalent Co(1), and two equivalent Co(2) atoms. In the second Ge site, Ge(4) is bonded in a 7-coordinate geometry to one Sc(1), two equivalent Sc(2), one Co(1), two equivalent Co(2), and one Ge(4) atom. In the third Ge site, Ge(5) is bonded in a 9-coordinate geometry to two equivalent Sc(2), three equivalent Sc(1), two equivalent Co(1), and two equivalent Co(2) atoms. In the fourth Ge site, Ge(1) is bonded in a 7-coordinate geometry to four equivalent Sc(2), two equivalent Co(2), and one Ge(1) atom. In the fifth Ge site, Ge(2) is bonded in a 8-coordinate geometry to two equivalent Sc(1), four equivalent Sc(2), and two equivalent Co(2) atoms.
ScCoGe2 crystallizes in the orthorhombic Pbam space group. There are two inequivalent Sc sites. In the first Sc site, Sc(1) is bonded in a 7-coordinate geometry to two equivalent Co(1), two equivalent Ge(2), two equivalent Ge(4), and three equivalent Ge(5) atoms. Both Sc(1)-Co(1) bond lengths are 3.07 Å. There is one shorter (2.75 Å) and one longer (2.77 Å) Sc(1)-Ge(2) bond length. Both Sc(1)-Ge(4) bond lengths are 2.74 Å. There are a spread of Sc(1)-Ge(5) bond distances ranging from 2.78-2.93 Å. In the second Sc site, Sc(2) is bonded in a 12-coordinate geometry to one Co(1), three equivalent Co(2), one Ge(3), one Ge(5), two equivalent Ge(1), two equivalent Ge(2), and two equivalent Ge(4) atoms. The Sc(2)-Co(1) bond length is 3.04 Å. There are a spread of Sc(2)-Co(2) bond distances ranging from 3.01-3.15 Å. The Sc(2)-Ge(3) bond length is 2.82 Å. The Sc(2)-Ge(5) bond length is 2.70 Å. There is one shorter (2.97 Å) and one longer (2.98 Å) Sc(2)-Ge(1) bond length. There is one shorter (2.84 Å) and one longer (2.85 Å) Sc(2)-Ge(2) bond length. There is one shorter (2.88 Å) and one longer (2.91 Å) Sc(2)-Ge(4) bond length. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent Sc(1), two equivalent Sc(2), two equivalent Co(2), two equivalent Ge(3), two equivalent Ge(4), and two equivalent Ge(5) atoms to form a mixture of distorted face and edge-sharing CoSc4Co2Ge6 cuboctahedra. Both Co(1)-Co(2) bond lengths are 2.70 Å. Both Co(1)-Ge(3) bond lengths are 2.52 Å. Both Co(1)-Ge(4) bond lengths are 2.46 Å. Both Co(1)-Ge(5) bond lengths are 2.52 Å. In the second Co site, Co(2) is bonded in a 6-coordinate geometry to three equivalent Sc(2), one Co(1), one Ge(1), one Ge(2), one Ge(3), one Ge(5), and two equivalent Ge(4) atoms. The Co(2)-Ge(1) bond length is 2.37 Å. The Co(2)-Ge(2) bond length is 2.41 Å. The Co(2)-Ge(3) bond length is 2.56 Å. The Co(2)-Ge(5) bond length is 2.55 Å. There is one shorter (2.50 Å) and one longer (2.51 Å) Co(2)-Ge(4) bond length. There are five inequivalent Ge sites. In the first Ge site, Ge(3) is bonded in a 6-coordinate geometry to two equivalent Sc(2), two equivalent Co(1), and two equivalent Co(2) atoms. In the second Ge site, Ge(4) is bonded in a 7-coordinate geometry to one Sc(1), two equivalent Sc(2), one Co(1), two equivalent Co(2), and one Ge(4) atom. The Ge(4)-Ge(4) bond length is 2.50 Å. In the third Ge site, Ge(5) is bonded in a 9-coordinate geometry to two equivalent Sc(2), three equivalent Sc(1), two equivalent Co(1), and two equivalent Co(2) atoms. In the fourth Ge site, Ge(1) is bonded in a 7-coordinate geometry to four equivalent Sc(2), two equivalent Co(2), and one Ge(1) atom. The Ge(1)-Ge(1) bond length is 2.61 Å. In the fifth Ge site, Ge(2) is bonded in a 8-coordinate geometry to two equivalent Sc(1), four equivalent Sc(2), and two equivalent Co(2) atoms.