Y3CuSnS7 crystallizes in the hexagonal P6_3 space group. Y(1) is bonded in a 7-coordinate geometry to one S(1), three equivalent S(2), and three equivalent S(3) atoms. Cu(1) is bonded in a trigonal planar geometry to three equivalent S(3) atoms. Sn(1) is bonded in a tetrahedral geometry to one S(1) and three equivalent S(2) atoms. There are three inequivalent S sites. In the first S site, S(1) is bonded in a tetrahedral geometry to three equivalent Y(1) and one Sn(1) atom. In the second S site, S(2) is bonded in a distorted rectangular see-saw-like geometry to three equivalent Y(1) and one Sn(1) atom. In the third S site, S(3) is bonded in a 4-coordinate geometry to three equivalent Y(1) and one Cu(1) atom.
Y3CuSnS7 crystallizes in the hexagonal P6_3 space group. Y(1) is bonded in a 7-coordinate geometry to one S(1), three equivalent S(2), and three equivalent S(3) atoms. The Y(1)-S(1) bond length is 2.85 Å. There are a spread of Y(1)-S(2) bond distances ranging from 2.87-3.15 Å. There are a spread of Y(1)-S(3) bond distances ranging from 2.73-2.84 Å. Cu(1) is bonded in a trigonal planar geometry to three equivalent S(3) atoms. All Cu(1)-S(3) bond lengths are 2.23 Å. Sn(1) is bonded in a tetrahedral geometry to one S(1) and three equivalent S(2) atoms. The Sn(1)-S(1) bond length is 2.41 Å. All Sn(1)-S(2) bond lengths are 2.42 Å. There are three inequivalent S sites. In the first S site, S(1) is bonded in a tetrahedral geometry to three equivalent Y(1) and one Sn(1) atom. In the second S site, S(2) is bonded in a distorted rectangular see-saw-like geometry to three equivalent Y(1) and one Sn(1) atom. In the third S site, S(3) is bonded in a 4-coordinate geometry to three equivalent Y(1) and one Cu(1) atom.