La3Co2S7 crystallizes in the hexagonal P6_3 space group. La(1) is bonded in a 8-coordinate geometry to one S(3), three equivalent S(2), and four equivalent S(1) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to six equivalent S(1) atoms to form face-sharing CoS6 octahedra. In the second Co site, Co(2) is bonded in a tetrahedral geometry to one S(3) and three equivalent S(2) atoms. There are three inequivalent S sites. In the first S site, S(1) is bonded in a 6-coordinate geometry to four equivalent La(1) and two equivalent Co(1) atoms. In the second S site, S(2) is bonded in a distorted rectangular see-saw-like geometry to three equivalent La(1) and one Co(2) atom. In the third S site, S(3) is bonded in a distorted tetrahedral geometry to three equivalent La(1) and one Co(2) atom.
La3Co2S7 crystallizes in the hexagonal P6_3 space group. La(1) is bonded in a 8-coordinate geometry to one S(3), three equivalent S(2), and four equivalent S(1) atoms. The La(1)-S(3) bond length is 2.86 Å. There are a spread of La(1)-S(2) bond distances ranging from 2.82-2.94 Å. There are a spread of La(1)-S(1) bond distances ranging from 2.94-3.45 Å. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to six equivalent S(1) atoms to form face-sharing CoS6 octahedra. There are three shorter (2.34 Å) and three longer (2.36 Å) Co(1)-S(1) bond lengths. In the second Co site, Co(2) is bonded in a tetrahedral geometry to one S(3) and three equivalent S(2) atoms. The Co(2)-S(3) bond length is 2.21 Å. All Co(2)-S(2) bond lengths are 2.23 Å. There are three inequivalent S sites. In the first S site, S(1) is bonded in a 6-coordinate geometry to four equivalent La(1) and two equivalent Co(1) atoms. In the second S site, S(2) is bonded in a distorted rectangular see-saw-like geometry to three equivalent La(1) and one Co(2) atom. In the third S site, S(3) is bonded in a distorted tetrahedral geometry to three equivalent La(1) and one Co(2) atom.