Rb2SnTe5 crystallizes in the monoclinic C2/m space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 8-coordinate geometry to two equivalent Te(1), two equivalent Te(3), and four equivalent Te(2) atoms. In the second Rb site, Rb(2) is bonded in a body-centered cubic geometry to two equivalent Te(1), two equivalent Te(3), and four equivalent Te(2) atoms. Sn(1) is bonded in a tetrahedral geometry to one Te(1), one Te(3), and two equivalent Te(2) atoms. There are five inequivalent Te sites. In the first Te site, Te(1) is bonded in a 6-coordinate geometry to two equivalent Rb(1), two equivalent Rb(2), one Sn(1), and one Te(4) atom. In the second Te site, Te(2) is bonded in a 6-coordinate geometry to two equivalent Rb(1), two equivalent Rb(2), one Sn(1), and one Te(5) atom. In the third Te site, Te(3) is bonded in a 6-coordinate geometry to two equivalent Rb(1), two equivalent Rb(2), one Sn(1), and one Te(4) atom. In the fourth Te site, Te(4) is bonded in a square co-planar geometry to two equivalent Te(1) and two equivalent Te(3) atoms. In the fifth Te site, Te(5) is bonded in a square co-planar geometry to four equivalent Te(2) atoms.
Rb2SnTe5 crystallizes in the monoclinic C2/m space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 8-coordinate geometry to two equivalent Te(1), two equivalent Te(3), and four equivalent Te(2) atoms. Both Rb(1)-Te(1) bond lengths are 3.70 Å. Both Rb(1)-Te(3) bond lengths are 3.72 Å. There are two shorter (3.70 Å) and two longer (3.72 Å) Rb(1)-Te(2) bond lengths. In the second Rb site, Rb(2) is bonded in a body-centered cubic geometry to two equivalent Te(1), two equivalent Te(3), and four equivalent Te(2) atoms. Both Rb(2)-Te(1) bond lengths are 3.93 Å. Both Rb(2)-Te(3) bond lengths are 3.90 Å. There are two shorter (3.89 Å) and two longer (3.92 Å) Rb(2)-Te(2) bond lengths. Sn(1) is bonded in a tetrahedral geometry to one Te(1), one Te(3), and two equivalent Te(2) atoms. The Sn(1)-Te(1) bond length is 2.79 Å. The Sn(1)-Te(3) bond length is 2.79 Å. Both Sn(1)-Te(2) bond lengths are 2.79 Å. There are five inequivalent Te sites. In the first Te site, Te(1) is bonded in a 6-coordinate geometry to two equivalent Rb(1), two equivalent Rb(2), one Sn(1), and one Te(4) atom. The Te(1)-Te(4) bond length is 3.06 Å. In the second Te site, Te(2) is bonded in a 6-coordinate geometry to two equivalent Rb(1), two equivalent Rb(2), one Sn(1), and one Te(5) atom. The Te(2)-Te(5) bond length is 3.05 Å. In the third Te site, Te(3) is bonded in a 6-coordinate geometry to two equivalent Rb(1), two equivalent Rb(2), one Sn(1), and one Te(4) atom. The Te(3)-Te(4) bond length is 3.05 Å. In the fourth Te site, Te(4) is bonded in a square co-planar geometry to two equivalent Te(1) and two equivalent Te(3) atoms. In the fifth Te site, Te(5) is bonded in a square co-planar geometry to four equivalent Te(2) atoms.