MgLa2S4 crystallizes in the orthorhombic Pnma space group. Mg(1) is bonded in a distorted trigonal pyramidal geometry to one S(2), one S(3), and two equivalent S(1) atoms. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 7-coordinate geometry to one S(2), two equivalent S(3), and four equivalent S(1) atoms. In the second La site, La(2) is bonded in a 6-coordinate geometry to one S(2), one S(3), and four equivalent S(1) atoms. There are three inequivalent S sites. In the first S site, S(1) is bonded to one Mg(1), two equivalent La(1), and two equivalent La(2) atoms to form a mixture of distorted face, corner, and edge-sharing SLa4Mg square pyramids. In the second S site, S(2) is bonded in a T-shaped geometry to one Mg(1), one La(1), and one La(2) atom. In the third S site, S(3) is bonded in a 4-coordinate geometry to one Mg(1), one La(2), and two equivalent La(1) atoms.
MgLa2S4 crystallizes in the orthorhombic Pnma space group. Mg(1) is bonded in a distorted trigonal pyramidal geometry to one S(2), one S(3), and two equivalent S(1) atoms. The Mg(1)-S(2) bond length is 2.33 Å. The Mg(1)-S(3) bond length is 2.42 Å. Both Mg(1)-S(1) bond lengths are 2.41 Å. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 7-coordinate geometry to one S(2), two equivalent S(3), and four equivalent S(1) atoms. The La(1)-S(2) bond length is 2.93 Å. There is one shorter (2.87 Å) and one longer (2.89 Å) La(1)-S(3) bond length. There are two shorter (2.97 Å) and two longer (3.27 Å) La(1)-S(1) bond lengths. In the second La site, La(2) is bonded in a 6-coordinate geometry to one S(2), one S(3), and four equivalent S(1) atoms. The La(2)-S(2) bond length is 2.73 Å. The La(2)-S(3) bond length is 3.01 Å. There are two shorter (2.92 Å) and two longer (3.06 Å) La(2)-S(1) bond lengths. There are three inequivalent S sites. In the first S site, S(1) is bonded to one Mg(1), two equivalent La(1), and two equivalent La(2) atoms to form a mixture of distorted face, corner, and edge-sharing SLa4Mg square pyramids. In the second S site, S(2) is bonded in a T-shaped geometry to one Mg(1), one La(1), and one La(2) atom. In the third S site, S(3) is bonded in a 4-coordinate geometry to one Mg(1), one La(2), and two equivalent La(1) atoms.