Rb3DyO3 crystallizes in the monoclinic C2/m space group. There are three inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 5-coordinate geometry to one O(1) and four equivalent O(2) atoms. In the second Rb site, Rb(2) is bonded in a 4-coordinate geometry to four equivalent O(2) atoms. In the third Rb site, Rb(3) is bonded in a 4-coordinate geometry to four equivalent O(2) atoms. Dy(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form edge-sharing DyO4 tetrahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Rb(1) and two equivalent Dy(1) atoms. In the second O site, O(2) is bonded in a 7-coordinate geometry to two equivalent Rb(1), two equivalent Rb(2), two equivalent Rb(3), and one Dy(1) atom.
Rb3DyO3 crystallizes in the monoclinic C2/m space group. There are three inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 5-coordinate geometry to one O(1) and four equivalent O(2) atoms. The Rb(1)-O(1) bond length is 2.68 Å. There are two shorter (3.07 Å) and two longer (3.21 Å) Rb(1)-O(2) bond lengths. In the second Rb site, Rb(2) is bonded in a 4-coordinate geometry to four equivalent O(2) atoms. There are two shorter (2.84 Å) and two longer (3.24 Å) Rb(2)-O(2) bond lengths. In the third Rb site, Rb(3) is bonded in a 4-coordinate geometry to four equivalent O(2) atoms. There are two shorter (2.93 Å) and two longer (3.22 Å) Rb(3)-O(2) bond lengths. Dy(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form edge-sharing DyO4 tetrahedra. There is one shorter (2.19 Å) and one longer (2.21 Å) Dy(1)-O(1) bond length. Both Dy(1)-O(2) bond lengths are 2.13 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Rb(1) and two equivalent Dy(1) atoms. In the second O site, O(2) is bonded in a 7-coordinate geometry to two equivalent Rb(1), two equivalent Rb(2), two equivalent Rb(3), and one Dy(1) atom.