Sm3MnGaS7 crystallizes in the hexagonal P6_3 space group. Sm(1) is bonded in a 7-coordinate geometry to one S(3), three equivalent S(1), and three equivalent S(2) atoms. Mn(1) is bonded to six equivalent S(1) atoms to form face-sharing MnS6 octahedra. Ga(1) 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 5-coordinate geometry to three equivalent Sm(1) and two equivalent Mn(1) atoms. In the second S site, S(2) is bonded in a rectangular see-saw-like geometry to three equivalent Sm(1) and one Ga(1) atom. In the third S site, S(3) is bonded in a tetrahedral geometry to three equivalent Sm(1) and one Ga(1) atom.
Sm3MnGaS7 crystallizes in the hexagonal P6_3 space group. Sm(1) is bonded in a 7-coordinate geometry to one S(3), three equivalent S(1), and three equivalent S(2) atoms. The Sm(1)-S(3) bond length is 2.85 Å. There are a spread of Sm(1)-S(1) bond distances ranging from 2.86-2.96 Å. There are a spread of Sm(1)-S(2) bond distances ranging from 2.81-2.97 Å. Mn(1) is bonded to six equivalent S(1) atoms to form face-sharing MnS6 octahedra. There are three shorter (2.51 Å) and three longer (2.68 Å) Mn(1)-S(1) bond lengths. Ga(1) is bonded in a tetrahedral geometry to one S(3) and three equivalent S(2) atoms. The Ga(1)-S(3) bond length is 2.25 Å. All Ga(1)-S(2) bond lengths are 2.30 Å. There are three inequivalent S sites. In the first S site, S(1) is bonded in a 5-coordinate geometry to three equivalent Sm(1) and two equivalent Mn(1) atoms. In the second S site, S(2) is bonded in a rectangular see-saw-like geometry to three equivalent Sm(1) and one Ga(1) atom. In the third S site, S(3) is bonded in a tetrahedral geometry to three equivalent Sm(1) and one Ga(1) atom.