Ga2Sn2S5 crystallizes in the orthorhombic Pna2_1 space group. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one S(1), one S(2), one S(3), and one S(5) atom to form corner-sharing GaS4 tetrahedra. In the second Ga site, Ga(2) is bonded to one S(1), one S(2), one S(4), and one S(5) atom to form corner-sharing GaS4 tetrahedra. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 3-coordinate geometry to one S(1), one S(3), and one S(4) atom. In the second Sn site, Sn(2) is bonded in a 3-coordinate geometry to one S(3), one S(4), and one S(5) atom. There are five inequivalent S sites. In the first S site, S(5) is bonded in a trigonal non-coplanar geometry to one Ga(1), one Ga(2), and one Sn(2) atom. In the second S site, S(1) is bonded in a distorted trigonal non-coplanar geometry to one Ga(1), one Ga(2), and one Sn(1) atom. In the third S site, S(2) is bonded in a water-like geometry to one Ga(1) and one Ga(2) atom. In the fourth S site, S(3) is bonded in a distorted trigonal non-coplanar geometry to one Ga(1), one Sn(1), and one Sn(2) atom. In the fifth S site, S(4) is bonded in a 3-coordinate geometry to one Ga(2), one Sn(1), and one Sn(2) atom.
Ga2Sn2S5 crystallizes in the orthorhombic Pna2_1 space group. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one S(1), one S(2), one S(3), and one S(5) atom to form corner-sharing GaS4 tetrahedra. The Ga(1)-S(1) bond length is 2.29 Å. The Ga(1)-S(2) bond length is 2.26 Å. The Ga(1)-S(3) bond length is 2.30 Å. The Ga(1)-S(5) bond length is 2.30 Å. In the second Ga site, Ga(2) is bonded to one S(1), one S(2), one S(4), and one S(5) atom to form corner-sharing GaS4 tetrahedra. The Ga(2)-S(1) bond length is 2.30 Å. The Ga(2)-S(2) bond length is 2.25 Å. The Ga(2)-S(4) bond length is 2.30 Å. The Ga(2)-S(5) bond length is 2.30 Å. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 3-coordinate geometry to one S(1), one S(3), and one S(4) atom. The Sn(1)-S(1) bond length is 2.67 Å. The Sn(1)-S(3) bond length is 2.64 Å. The Sn(1)-S(4) bond length is 2.72 Å. In the second Sn site, Sn(2) is bonded in a 3-coordinate geometry to one S(3), one S(4), and one S(5) atom. The Sn(2)-S(3) bond length is 2.65 Å. The Sn(2)-S(4) bond length is 2.64 Å. The Sn(2)-S(5) bond length is 2.75 Å. There are five inequivalent S sites. In the first S site, S(5) is bonded in a trigonal non-coplanar geometry to one Ga(1), one Ga(2), and one Sn(2) atom. In the second S site, S(1) is bonded in a distorted trigonal non-coplanar geometry to one Ga(1), one Ga(2), and one Sn(1) atom. In the third S site, S(2) is bonded in a water-like geometry to one Ga(1) and one Ga(2) atom. In the fourth S site, S(3) is bonded in a distorted trigonal non-coplanar geometry to one Ga(1), one Sn(1), and one Sn(2) atom. In the fifth S site, S(4) is bonded in a 3-coordinate geometry to one Ga(2), one Sn(1), and one Sn(2) atom.