Sc2Co12P7 crystallizes in the hexagonal P-6 space group. There are two inequivalent Sc sites. In the first Sc site, Sc(1) is bonded in a 18-coordinate geometry to three equivalent Co(1), three equivalent Co(2), six equivalent Co(3), and six equivalent P(2) atoms. In the second Sc site, Sc(2) is bonded to six equivalent Co(1) and six equivalent P(1) atoms to form distorted ScCo6P6 cuboctahedra that share corners with six equivalent Co(3)Sc2P4 tetrahedra, corners with six equivalent Co(2)ScP4 tetrahedra, edges with three equivalent Co(3)Sc2P4 tetrahedra, and faces with two equivalent Sc(2)Co6P6 cuboctahedra. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded in a 4-coordinate geometry to one Sc(1), two equivalent Sc(2), two equivalent P(1), and two equivalent P(2) atoms. In the second Co site, Co(2) is bonded to one Sc(1), one P(1), one P(3), and two equivalent P(2) atoms to form distorted CoScP4 tetrahedra that share corners with two equivalent Sc(2)Co6P6 cuboctahedra, corners with two equivalent Co(3)Sc2P4 tetrahedra, corners with six equivalent Co(2)ScP4 tetrahedra, edges with two equivalent Co(3)Sc2P4 tetrahedra, and faces with two equivalent Co(3)Sc2P4 tetrahedra. In the third Co site, Co(3) is bonded to two equivalent Sc(1), two equivalent P(1), and two equivalent P(2) atoms to form distorted CoSc2P4 tetrahedra that share corners with two equivalent Sc(2)Co6P6 cuboctahedra, corners with two equivalent Co(2)ScP4 tetrahedra, corners with four equivalent Co(3)Sc2P4 tetrahedra,  an edgeedge with one Sc(2)Co6P6 cuboctahedra, edges with two equivalent Co(3)Sc2P4 tetrahedra, edges with two equivalent Co(2)ScP4 tetrahedra, faces with two equivalent Co(3)Sc2P4 tetrahedra, and faces with two equivalent Co(2)ScP4 tetrahedra. In the fourth Co site, Co(4) is bonded in a 5-coordinate geometry to one P(2), two equivalent P(1), and two equivalent P(3) atoms. There are three inequivalent P sites. In the first P site, P(1) is bonded in a 9-coordinate geometry to two equivalent Sc(2), one Co(2), two equivalent Co(1), two equivalent Co(3), and two equivalent Co(4) atoms. In the second P site, P(2) is bonded in a 9-coordinate geometry to two equivalent Sc(1), one Co(4), two equivalent Co(1), two equivalent Co(2), and two equivalent Co(3) atoms. In the third P site, P(3) is bonded in a 9-coordinate geometry to three equivalent Co(2) and six equivalent Co(4) atoms.
Sc2Co12P7 crystallizes in the hexagonal P-6 space group. There are two inequivalent Sc sites. In the first Sc site, Sc(1) is bonded in a 18-coordinate geometry to three equivalent Co(1), three equivalent Co(2), six equivalent Co(3), and six equivalent P(2) atoms. All Sc(1)-Co(1) bond lengths are 3.18 Å. All Sc(1)-Co(2) bond lengths are 3.04 Å. All Sc(1)-Co(3) bond lengths are 2.90 Å. All Sc(1)-P(2) bond lengths are 2.79 Å. In the second Sc site, Sc(2) is bonded to six equivalent Co(1) and six equivalent P(1) atoms to form distorted ScCo6P6 cuboctahedra that share corners with six equivalent Co(3)Sc2P4 tetrahedra, corners with six equivalent Co(2)ScP4 tetrahedra, edges with three equivalent Co(3)Sc2P4 tetrahedra, and faces with two equivalent Sc(2)Co6P6 cuboctahedra. All Sc(2)-Co(1) bond lengths are 2.87 Å. All Sc(2)-P(1) bond lengths are 2.78 Å. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded in a 4-coordinate geometry to one Sc(1), two equivalent Sc(2), two equivalent P(1), and two equivalent P(2) atoms. There is one shorter (2.20 Å) and one longer (2.21 Å) Co(1)-P(1) bond length. Both Co(1)-P(2) bond lengths are 2.30 Å. In the second Co site, Co(2) is bonded to one Sc(1), one P(1), one P(3), and two equivalent P(2) atoms to form distorted CoScP4 tetrahedra that share corners with two equivalent Sc(2)Co6P6 cuboctahedra, corners with two equivalent Co(3)Sc2P4 tetrahedra, corners with six equivalent Co(2)ScP4 tetrahedra, edges with two equivalent Co(3)Sc2P4 tetrahedra, and faces with two equivalent Co(3)Sc2P4 tetrahedra. The Co(2)-P(1) bond length is 2.21 Å. The Co(2)-P(3) bond length is 2.14 Å. Both Co(2)-P(2) bond lengths are 2.25 Å. In the third Co site, Co(3) is bonded to two equivalent Sc(1), two equivalent P(1), and two equivalent P(2) atoms to form distorted CoSc2P4 tetrahedra that share corners with two equivalent Sc(2)Co6P6 cuboctahedra, corners with two equivalent Co(2)ScP4 tetrahedra, corners with four equivalent Co(3)Sc2P4 tetrahedra,  an edgeedge with one Sc(2)Co6P6 cuboctahedra, edges with two equivalent Co(3)Sc2P4 tetrahedra, edges with two equivalent Co(2)ScP4 tetrahedra, faces with two equivalent Co(3)Sc2P4 tetrahedra, and faces with two equivalent Co(2)ScP4 tetrahedra. Both Co(3)-P(1) bond lengths are 2.28 Å. There is one shorter (2.20 Å) and one longer (2.27 Å) Co(3)-P(2) bond length. In the fourth Co site, Co(4) is bonded in a 5-coordinate geometry to one P(2), two equivalent P(1), and two equivalent P(3) atoms. The Co(4)-P(2) bond length is 2.26 Å. Both Co(4)-P(1) bond lengths are 2.42 Å. Both Co(4)-P(3) bond lengths are 2.54 Å. There are three inequivalent P sites. In the first P site, P(1) is bonded in a 9-coordinate geometry to two equivalent Sc(2), one Co(2), two equivalent Co(1), two equivalent Co(3), and two equivalent Co(4) atoms. In the second P site, P(2) is bonded in a 9-coordinate geometry to two equivalent Sc(1), one Co(4), two equivalent Co(1), two equivalent Co(2), and two equivalent Co(3) atoms. In the third P site, P(3) is bonded in a 9-coordinate geometry to three equivalent Co(2) and six equivalent Co(4) atoms.