Dy2SnS3 crystallizes in the monoclinic Cc space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 4-coordinate geometry to one S(1), one S(2), and two equivalent S(3) atoms. In the second Dy site, Dy(2) is bonded in a distorted rectangular see-saw-like geometry to one S(1), one S(3), and two equivalent S(2) atoms. Sn(1) is bonded in a 2-coordinate geometry to one S(1) and one S(2) atom. There are three inequivalent S sites. In the first S site, S(1) is bonded in a distorted T-shaped geometry to one Dy(1), one Dy(2), and one Sn(1) atom. In the second S site, S(2) is bonded in a rectangular see-saw-like geometry to one Dy(1), two equivalent Dy(2), and one Sn(1) atom. In the third S site, S(3) is bonded in a 3-coordinate geometry to one Dy(2) and two equivalent Dy(1) atoms.
Dy2SnS3 crystallizes in the monoclinic Cc space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 4-coordinate geometry to one S(1), one S(2), and two equivalent S(3) atoms. The Dy(1)-S(1) bond length is 2.66 Å. The Dy(1)-S(2) bond length is 2.69 Å. There is one shorter (2.64 Å) and one longer (2.66 Å) Dy(1)-S(3) bond length. In the second Dy site, Dy(2) is bonded in a distorted rectangular see-saw-like geometry to one S(1), one S(3), and two equivalent S(2) atoms. The Dy(2)-S(1) bond length is 2.65 Å. The Dy(2)-S(3) bond length is 2.69 Å. Both Dy(2)-S(2) bond lengths are 2.68 Å. Sn(1) is bonded in a 2-coordinate geometry to one S(1) and one S(2) atom. The Sn(1)-S(1) bond length is 2.56 Å. The Sn(1)-S(2) bond length is 2.81 Å. There are three inequivalent S sites. In the first S site, S(1) is bonded in a distorted T-shaped geometry to one Dy(1), one Dy(2), and one Sn(1) atom. In the second S site, S(2) is bonded in a rectangular see-saw-like geometry to one Dy(1), two equivalent Dy(2), and one Sn(1) atom. In the third S site, S(3) is bonded in a 3-coordinate geometry to one Dy(2) and two equivalent Dy(1) atoms.