RbLi3S2O9 crystallizes in the triclinic P1 space group. Rb(1) is bonded in a 3-coordinate geometry to one O(3), one O(7), and one O(8) atom. There are three inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(4), one O(5), and one O(8) atom to form LiO4 tetrahedra that share corners with two equivalent Li(2)O4 tetrahedra and corners with two equivalent S(2)O4 tetrahedra. In the second Li site, Li(2) is bonded to one O(1), one O(2), one O(5), and one O(7) atom to form LiO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra and corners with two equivalent S(2)O4 tetrahedra. In the third Li site, Li(3) is bonded in a 4-coordinate geometry to one O(3), one O(4), one O(6), and one O(9) atom. There are two inequivalent S sites. In the first S site, S(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(2), and one O(4) atom. In the second S site, S(2) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form SO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra and corners with two equivalent Li(2)O4 tetrahedra. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Li(1), one Li(2), and one S(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Li(2) and one S(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Rb(1), one Li(3), and one O(9) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Li(1), one Li(3), and one S(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Li(1), one Li(2), and one S(2) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Li(3) and one S(2) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Rb(1), one Li(2), and one S(2) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to one Rb(1), one Li(1), and one S(2) atom. In the ninth O site, O(9) is bonded in a 2-coordinate geometry to one Li(3) and one O(3) atom.
RbLi3S2O9 crystallizes in the triclinic P1 space group. Rb(1) is bonded in a 3-coordinate geometry to one O(3), one O(7), and one O(8) atom. The Rb(1)-O(3) bond length is 2.93 Å. The Rb(1)-O(7) bond length is 2.86 Å. The Rb(1)-O(8) bond length is 2.81 Å. There are three inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(4), one O(5), and one O(8) atom to form LiO4 tetrahedra that share corners with two equivalent Li(2)O4 tetrahedra and corners with two equivalent S(2)O4 tetrahedra. The Li(1)-O(1) bond length is 2.01 Å. The Li(1)-O(4) bond length is 2.02 Å. The Li(1)-O(5) bond length is 2.02 Å. The Li(1)-O(8) bond length is 2.01 Å. In the second Li site, Li(2) is bonded to one O(1), one O(2), one O(5), and one O(7) atom to form LiO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra and corners with two equivalent S(2)O4 tetrahedra. The Li(2)-O(1) bond length is 2.01 Å. The Li(2)-O(2) bond length is 1.91 Å. The Li(2)-O(5) bond length is 1.99 Å. The Li(2)-O(7) bond length is 2.00 Å. In the third Li site, Li(3) is bonded in a 4-coordinate geometry to one O(3), one O(4), one O(6), and one O(9) atom. The Li(3)-O(3) bond length is 2.17 Å. The Li(3)-O(4) bond length is 1.89 Å. The Li(3)-O(6) bond length is 1.87 Å. The Li(3)-O(9) bond length is 2.13 Å. There are two inequivalent S sites. In the first S site, S(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(2), and one O(4) atom. The S(1)-O(1) bond length is 1.54 Å. The S(1)-O(2) bond length is 1.49 Å. The S(1)-O(4) bond length is 1.54 Å. In the second S site, S(2) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form SO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra and corners with two equivalent Li(2)O4 tetrahedra. The S(2)-O(5) bond length is 1.50 Å. The S(2)-O(6) bond length is 1.50 Å. The S(2)-O(7) bond length is 1.48 Å. The S(2)-O(8) bond length is 1.49 Å. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Li(1), one Li(2), and one S(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Li(2) and one S(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Rb(1), one Li(3), and one O(9) atom. The O(3)-O(9) bond length is 1.28 Å. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Li(1), one Li(3), and one S(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Li(1), one Li(2), and one S(2) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Li(3) and one S(2) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Rb(1), one Li(2), and one S(2) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to one Rb(1), one Li(1), and one S(2) atom. In the ninth O site, O(9) is bonded in a 2-coordinate geometry to one Li(3) and one O(3) atom.