Mg(ScS2)2 crystallizes in the orthorhombic Pnma space group. Mg(1) is bonded in a rectangular see-saw-like geometry to one S(2), one S(3), and two equivalent S(1) atoms. There are two inequivalent Sc sites. In the first Sc site, Sc(1) is bonded to one S(2), two equivalent S(1), and two equivalent S(3) atoms to form distorted ScS5 trigonal bipyramids that share corners with four equivalent Sc(2)S6 octahedra, corners with two equivalent Sc(1)S5 trigonal bipyramids, and  a faceface with one Sc(2)S6 octahedra. The corner-sharing octahedral tilt angles range from 8-79°. In the second Sc site, Sc(2) is bonded to one S(2), one S(3), and four equivalent S(1) atoms to form distorted ScS6 octahedra that share corners with four equivalent Sc(1)S5 trigonal bipyramids, edges with two equivalent Sc(2)S6 octahedra, and  a faceface with one Sc(1)S5 trigonal bipyramid. There are three inequivalent S sites. In the first S site, S(1) is bonded in a 4-coordinate geometry to one Mg(1), one Sc(1), and two equivalent Sc(2) atoms. In the second S site, S(2) is bonded in a T-shaped geometry to one Mg(1), one Sc(1), and one Sc(2) atom. In the third S site, S(3) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Sc(2), and two equivalent Sc(1) atoms.
Mg(ScS2)2 crystallizes in the orthorhombic Pnma space group. Mg(1) is bonded in a rectangular see-saw-like geometry to one S(2), one S(3), and two equivalent S(1) atoms. The Mg(1)-S(2) bond length is 2.40 Å. The Mg(1)-S(3) bond length is 2.50 Å. Both Mg(1)-S(1) bond lengths are 2.51 Å. There are two inequivalent Sc sites. In the first Sc site, Sc(1) is bonded to one S(2), two equivalent S(1), and two equivalent S(3) atoms to form distorted ScS5 trigonal bipyramids that share corners with four equivalent Sc(2)S6 octahedra, corners with two equivalent Sc(1)S5 trigonal bipyramids, and  a faceface with one Sc(2)S6 octahedra. The corner-sharing octahedral tilt angles range from 8-79°. The Sc(1)-S(2) bond length is 2.52 Å. Both Sc(1)-S(1) bond lengths are 2.63 Å. There is one shorter (2.49 Å) and one longer (2.53 Å) Sc(1)-S(3) bond length. In the second Sc site, Sc(2) is bonded to one S(2), one S(3), and four equivalent S(1) atoms to form distorted ScS6 octahedra that share corners with four equivalent Sc(1)S5 trigonal bipyramids, edges with two equivalent Sc(2)S6 octahedra, and  a faceface with one Sc(1)S5 trigonal bipyramid. The Sc(2)-S(2) bond length is 2.47 Å. The Sc(2)-S(3) bond length is 2.60 Å. There are two shorter (2.65 Å) and two longer (2.66 Å) Sc(2)-S(1) bond lengths. There are three inequivalent S sites. In the first S site, S(1) is bonded in a 4-coordinate geometry to one Mg(1), one Sc(1), and two equivalent Sc(2) atoms. In the second S site, S(2) is bonded in a T-shaped geometry to one Mg(1), one Sc(1), and one Sc(2) atom. In the third S site, S(3) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Sc(2), and two equivalent Sc(1) atoms.