Rb2Ti(WO4)3 crystallizes in the monoclinic C2 space group. Rb(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. Ti(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms to form TiO6 octahedra that share corners with two equivalent W(2)O6 octahedra and corners with four equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles are 38°. There are two inequivalent W sites. In the first W site, W(1) is bonded to one O(3), one O(4), one O(5), one O(6), and two equivalent O(1) atoms to form WO6 octahedra that share corners with two equivalent Ti(1)O6 octahedra, corners with two equivalent W(1)O6 octahedra, and corners with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 38-39°. In the second W site, W(2) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(6) atoms to form WO6 octahedra that share corners with two equivalent Ti(1)O6 octahedra and corners with four equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 38-39°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Rb(1) and two equivalent W(1) atoms. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one Ti(1), and one W(2) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one Ti(1), and one W(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Rb(1), one W(1), and one W(2) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one Ti(1), and one W(1) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one W(1), and one W(2) atom.
Rb2Ti(WO4)3 crystallizes in the monoclinic C2 space group. Rb(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. The Rb(1)-O(1) bond length is 3.44 Å. The Rb(1)-O(2) bond length is 3.10 Å. The Rb(1)-O(3) bond length is 3.46 Å. The Rb(1)-O(4) bond length is 3.08 Å. The Rb(1)-O(5) bond length is 3.09 Å. The Rb(1)-O(6) bond length is 3.45 Å. Ti(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms to form TiO6 octahedra that share corners with two equivalent W(2)O6 octahedra and corners with four equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles are 38°. Both Ti(1)-O(2) bond lengths are 1.97 Å. Both Ti(1)-O(3) bond lengths are 1.96 Å. Both Ti(1)-O(5) bond lengths are 1.97 Å. There are two inequivalent W sites. In the first W site, W(1) is bonded to one O(3), one O(4), one O(5), one O(6), and two equivalent O(1) atoms to form WO6 octahedra that share corners with two equivalent Ti(1)O6 octahedra, corners with two equivalent W(1)O6 octahedra, and corners with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 38-39°. The W(1)-O(3) bond length is 1.91 Å. The W(1)-O(4) bond length is 1.96 Å. The W(1)-O(5) bond length is 1.91 Å. The W(1)-O(6) bond length is 1.96 Å. There is one shorter (1.95 Å) and one longer (1.97 Å) W(1)-O(1) bond length. In the second W site, W(2) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(6) atoms to form WO6 octahedra that share corners with two equivalent Ti(1)O6 octahedra and corners with four equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 38-39°. Both W(2)-O(2) bond lengths are 1.91 Å. Both W(2)-O(4) bond lengths are 1.97 Å. Both W(2)-O(6) bond lengths are 1.95 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Rb(1) and two equivalent W(1) atoms. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one Ti(1), and one W(2) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one Ti(1), and one W(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Rb(1), one W(1), and one W(2) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one Ti(1), and one W(1) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one W(1), and one W(2) atom.