RbGa3S5 crystallizes in the monoclinic P2_1/c space group. Rb(1) is bonded in a 8-coordinate geometry to one S(2), one S(4), two equivalent S(1), two equivalent S(3), and two equivalent S(5) atoms. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one S(1), one S(2), one S(4), and one S(5) atom to form a mixture of corner and edge-sharing GaS4 tetrahedra. In the second Ga site, Ga(2) is bonded to one S(1), one S(2), one S(3), and one S(4) atom to form a mixture of corner and edge-sharing GaS4 tetrahedra. In the third Ga site, Ga(3) is bonded to one S(2), one S(3), one S(4), and one S(5) atom to form corner-sharing GaS4 tetrahedra. There are five inequivalent S sites. In the first S site, S(1) is bonded in a distorted water-like geometry to two equivalent Rb(1), one Ga(1), and one Ga(2) atom. In the second S site, S(2) is bonded in a distorted rectangular see-saw-like geometry to one Rb(1), one Ga(1), one Ga(2), and one Ga(3) atom. In the third S site, S(3) is bonded in a distorted water-like geometry to two equivalent Rb(1), one Ga(2), and one Ga(3) atom. In the fourth S site, S(4) is bonded in a distorted trigonal non-coplanar geometry to one Rb(1), one Ga(1), one Ga(2), and one Ga(3) atom. In the fifth S site, S(5) is bonded in a distorted water-like geometry to two equivalent Rb(1), one Ga(1), and one Ga(3) atom.
RbGa3S5 crystallizes in the monoclinic P2_1/c space group. Rb(1) is bonded in a 8-coordinate geometry to one S(2), one S(4), two equivalent S(1), two equivalent S(3), and two equivalent S(5) atoms. The Rb(1)-S(2) bond length is 3.60 Å. The Rb(1)-S(4) bond length is 3.89 Å. There is one shorter (3.41 Å) and one longer (3.57 Å) Rb(1)-S(1) bond length. There is one shorter (3.57 Å) and one longer (3.72 Å) Rb(1)-S(3) bond length. There is one shorter (3.56 Å) and one longer (3.75 Å) Rb(1)-S(5) bond length. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one S(1), one S(2), one S(4), and one S(5) atom to form a mixture of corner and edge-sharing GaS4 tetrahedra. The Ga(1)-S(1) bond length is 2.22 Å. The Ga(1)-S(2) bond length is 2.33 Å. The Ga(1)-S(4) bond length is 2.36 Å. The Ga(1)-S(5) bond length is 2.24 Å. In the second Ga site, Ga(2) is bonded to one S(1), one S(2), one S(3), and one S(4) atom to form a mixture of corner and edge-sharing GaS4 tetrahedra. The Ga(2)-S(1) bond length is 2.22 Å. The Ga(2)-S(2) bond length is 2.31 Å. The Ga(2)-S(3) bond length is 2.24 Å. The Ga(2)-S(4) bond length is 2.35 Å. In the third Ga site, Ga(3) is bonded to one S(2), one S(3), one S(4), and one S(5) atom to form corner-sharing GaS4 tetrahedra. The Ga(3)-S(2) bond length is 2.31 Å. The Ga(3)-S(3) bond length is 2.26 Å. The Ga(3)-S(4) bond length is 2.33 Å. The Ga(3)-S(5) bond length is 2.26 Å. There are five inequivalent S sites. In the first S site, S(1) is bonded in a distorted water-like geometry to two equivalent Rb(1), one Ga(1), and one Ga(2) atom. In the second S site, S(2) is bonded in a distorted rectangular see-saw-like geometry to one Rb(1), one Ga(1), one Ga(2), and one Ga(3) atom. In the third S site, S(3) is bonded in a distorted water-like geometry to two equivalent Rb(1), one Ga(2), and one Ga(3) atom. In the fourth S site, S(4) is bonded in a distorted trigonal non-coplanar geometry to one Rb(1), one Ga(1), one Ga(2), and one Ga(3) atom. In the fifth S site, S(5) is bonded in a distorted water-like geometry to two equivalent Rb(1), one Ga(1), and one Ga(3) atom.