NaY3SiS7 crystallizes in the hexagonal P6_3 space group. Na(1) is bonded to six equivalent S(1) atoms to form face-sharing NaS6 octahedra. Y(1) is bonded in a 8-coordinate geometry to one S(3), three equivalent S(2), and four equivalent S(1) atoms. Si(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 6-coordinate geometry to two equivalent Na(1) and four equivalent Y(1) atoms. In the second S site, S(2) is bonded in a distorted rectangular see-saw-like geometry to three equivalent Y(1) and one Si(1) atom. In the third S site, S(3) is bonded in a distorted tetrahedral geometry to three equivalent Y(1) and one Si(1) atom.
NaY3SiS7 crystallizes in the hexagonal P6_3 space group. Na(1) is bonded to six equivalent S(1) atoms to form face-sharing NaS6 octahedra. There are three shorter (2.70 Å) and three longer (2.72 Å) Na(1)-S(1) bond lengths. Y(1) is bonded in a 8-coordinate geometry to one S(3), three equivalent S(2), and four equivalent S(1) atoms. The Y(1)-S(3) bond length is 2.96 Å. There are a spread of Y(1)-S(2) bond distances ranging from 2.79-3.02 Å. There are a spread of Y(1)-S(1) bond distances ranging from 2.81-3.21 Å. Si(1) is bonded in a tetrahedral geometry to one S(3) and three equivalent S(2) atoms. The Si(1)-S(3) bond length is 2.12 Å. All Si(1)-S(2) bond lengths are 2.15 Å. There are three inequivalent S sites. In the first S site, S(1) is bonded in a 6-coordinate geometry to two equivalent Na(1) and four equivalent Y(1) atoms. In the second S site, S(2) is bonded in a distorted rectangular see-saw-like geometry to three equivalent Y(1) and one Si(1) atom. In the third S site, S(3) is bonded in a distorted tetrahedral geometry to three equivalent Y(1) and one Si(1) atom.