La4MnS6O crystallizes in the hexagonal P6_3mc space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 4-coordinate geometry to three equivalent S(1), three equivalent S(2), and one O(1) atom. In the second La site, La(2) is bonded in a 1-coordinate geometry to three equivalent S(2), four equivalent S(1), and one O(1) atom. Mn(1) is bonded to six equivalent S(2) atoms to form distorted face-sharing MnS6 octahedra. There are two inequivalent S sites. In the first S site, S(1) is bonded in a 5-coordinate geometry to one La(1) and four equivalent La(2) atoms. In the second S site, S(2) is bonded in a 6-coordinate geometry to one La(1), three equivalent La(2), and two equivalent Mn(1) atoms. O(1) is bonded in a tetrahedral geometry to one La(1) and three equivalent La(2) atoms.
La4MnS6O crystallizes in the hexagonal P6_3mc space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 4-coordinate geometry to three equivalent S(1), three equivalent S(2), and one O(1) atom. All La(1)-S(1) bond lengths are 2.84 Å. All La(1)-S(2) bond lengths are 3.49 Å. The La(1)-O(1) bond length is 2.38 Å. In the second La site, La(2) is bonded in a 1-coordinate geometry to three equivalent S(2), four equivalent S(1), and one O(1) atom. There are two shorter (2.93 Å) and one longer (2.99 Å) La(2)-S(2) bond length. There are two shorter (2.94 Å) and two longer (3.26 Å) La(2)-S(1) bond lengths. The La(2)-O(1) bond length is 2.39 Å. Mn(1) is bonded to six equivalent S(2) atoms to form distorted face-sharing MnS6 octahedra. There are three shorter (2.45 Å) and three longer (2.90 Å) Mn(1)-S(2) bond lengths. There are two inequivalent S sites. In the first S site, S(1) is bonded in a 5-coordinate geometry to one La(1) and four equivalent La(2) atoms. In the second S site, S(2) is bonded in a 6-coordinate geometry to one La(1), three equivalent La(2), and two equivalent Mn(1) atoms. O(1) is bonded in a tetrahedral geometry to one La(1) and three equivalent La(2) atoms.