Mg2La3VS8 is Spinel-derived structured and crystallizes in the triclinic P-1 space group. Mg(1) is bonded to one S(1), one S(2), one S(3), and one S(4) atom to form MgS4 tetrahedra that share corners with three equivalent La(1)S6 octahedra, corners with three equivalent La(2)S6 octahedra, corners with three equivalent La(3)S6 octahedra, and corners with three equivalent V(1)S6 octahedra. The corner-sharing octahedral tilt angles range from 47-61°. There are three inequivalent La sites. In the first La site, La(1) is bonded to two equivalent S(2), two equivalent S(3), and two equivalent S(4) atoms to form LaS6 octahedra that share corners with six equivalent Mg(1)S4 tetrahedra, edges with two equivalent La(2)S6 octahedra, edges with two equivalent La(3)S6 octahedra, and edges with two equivalent V(1)S6 octahedra. In the second La site, La(2) is bonded to two equivalent S(1), two equivalent S(3), and two equivalent S(4) atoms to form LaS6 octahedra that share corners with six equivalent Mg(1)S4 tetrahedra, edges with two equivalent La(1)S6 octahedra, edges with two equivalent La(3)S6 octahedra, and edges with two equivalent V(1)S6 octahedra. In the third La site, La(3) is bonded to two equivalent S(1), two equivalent S(2), and two equivalent S(3) atoms to form LaS6 octahedra that share corners with six equivalent Mg(1)S4 tetrahedra, edges with two equivalent La(1)S6 octahedra, edges with two equivalent La(2)S6 octahedra, and edges with two equivalent V(1)S6 octahedra. V(1) is bonded to two equivalent S(1), two equivalent S(2), and two equivalent S(4) atoms to form VS6 octahedra that share corners with six equivalent Mg(1)S4 tetrahedra, edges with two equivalent La(1)S6 octahedra, edges with two equivalent La(2)S6 octahedra, and edges with two equivalent La(3)S6 octahedra. There are four inequivalent S sites. In the first S site, S(1) is bonded in a rectangular see-saw-like geometry to one Mg(1), one La(2), one La(3), and one V(1) atom. In the second S site, S(2) is bonded in a rectangular see-saw-like geometry to one Mg(1), one La(1), one La(3), and one V(1) atom. In the third S site, S(3) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one La(1), one La(2), and one La(3) atom. In the fourth S site, S(4) is bonded in a rectangular see-saw-like geometry to one Mg(1), one La(1), one La(2), and one V(1) atom.
Mg2La3VS8 is Spinel-derived structured and crystallizes in the triclinic P-1 space group. Mg(1) is bonded to one S(1), one S(2), one S(3), and one S(4) atom to form MgS4 tetrahedra that share corners with three equivalent La(1)S6 octahedra, corners with three equivalent La(2)S6 octahedra, corners with three equivalent La(3)S6 octahedra, and corners with three equivalent V(1)S6 octahedra. The corner-sharing octahedral tilt angles range from 47-61°. The Mg(1)-S(1) bond length is 2.58 Å. The Mg(1)-S(2) bond length is 2.59 Å. The Mg(1)-S(3) bond length is 2.42 Å. The Mg(1)-S(4) bond length is 2.57 Å. There are three inequivalent La sites. In the first La site, La(1) is bonded to two equivalent S(2), two equivalent S(3), and two equivalent S(4) atoms to form LaS6 octahedra that share corners with six equivalent Mg(1)S4 tetrahedra, edges with two equivalent La(2)S6 octahedra, edges with two equivalent La(3)S6 octahedra, and edges with two equivalent V(1)S6 octahedra. Both La(1)-S(2) bond lengths are 2.88 Å. Both La(1)-S(3) bond lengths are 2.82 Å. Both La(1)-S(4) bond lengths are 2.87 Å. In the second La site, La(2) is bonded to two equivalent S(1), two equivalent S(3), and two equivalent S(4) atoms to form LaS6 octahedra that share corners with six equivalent Mg(1)S4 tetrahedra, edges with two equivalent La(1)S6 octahedra, edges with two equivalent La(3)S6 octahedra, and edges with two equivalent V(1)S6 octahedra. Both La(2)-S(1) bond lengths are 2.88 Å. Both La(2)-S(3) bond lengths are 2.81 Å. Both La(2)-S(4) bond lengths are 2.88 Å. In the third La site, La(3) is bonded to two equivalent S(1), two equivalent S(2), and two equivalent S(3) atoms to form LaS6 octahedra that share corners with six equivalent Mg(1)S4 tetrahedra, edges with two equivalent La(1)S6 octahedra, edges with two equivalent La(2)S6 octahedra, and edges with two equivalent V(1)S6 octahedra. Both La(3)-S(1) bond lengths are 2.87 Å. Both La(3)-S(2) bond lengths are 2.88 Å. Both La(3)-S(3) bond lengths are 2.81 Å. V(1) is bonded to two equivalent S(1), two equivalent S(2), and two equivalent S(4) atoms to form VS6 octahedra that share corners with six equivalent Mg(1)S4 tetrahedra, edges with two equivalent La(1)S6 octahedra, edges with two equivalent La(2)S6 octahedra, and edges with two equivalent La(3)S6 octahedra. Both V(1)-S(1) bond lengths are 2.57 Å. Both V(1)-S(2) bond lengths are 2.57 Å. Both V(1)-S(4) bond lengths are 2.59 Å. There are four inequivalent S sites. In the first S site, S(1) is bonded in a rectangular see-saw-like geometry to one Mg(1), one La(2), one La(3), and one V(1) atom. In the second S site, S(2) is bonded in a rectangular see-saw-like geometry to one Mg(1), one La(1), one La(3), and one V(1) atom. In the third S site, S(3) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one La(1), one La(2), and one La(3) atom. In the fourth S site, S(4) is bonded in a rectangular see-saw-like geometry to one Mg(1), one La(1), one La(2), and one V(1) atom.