RbPr(WO4)2 crystallizes in the monoclinic C2/c space group. Rb(1) is bonded in a 12-coordinate geometry to two equivalent O(2), two equivalent O(3), four equivalent O(1), and four equivalent O(4) atoms. Pr(1) is bonded in a 8-coordinate geometry to two equivalent O(3), two equivalent O(4), and four equivalent O(2) atoms. W(1) is bonded in a 6-coordinate geometry to one O(2), one O(4), two equivalent O(1), and two equivalent O(3) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Rb(1) and two equivalent W(1) atoms. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Rb(1), two equivalent Pr(1), and one W(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Rb(1), one Pr(1), and two equivalent W(1) atoms. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to two equivalent Rb(1), one Pr(1), and one W(1) atom.
RbPr(WO4)2 crystallizes in the monoclinic C2/c space group. Rb(1) is bonded in a 12-coordinate geometry to two equivalent O(2), two equivalent O(3), four equivalent O(1), and four equivalent O(4) atoms. Both Rb(1)-O(2) bond lengths are 3.18 Å. Both Rb(1)-O(3) bond lengths are 3.10 Å. There are two shorter (2.95 Å) and two longer (2.96 Å) Rb(1)-O(1) bond lengths. There are two shorter (2.99 Å) and two longer (3.46 Å) Rb(1)-O(4) bond lengths. Pr(1) is bonded in a 8-coordinate geometry to two equivalent O(3), two equivalent O(4), and four equivalent O(2) atoms. Both Pr(1)-O(3) bond lengths are 2.40 Å. Both Pr(1)-O(4) bond lengths are 2.40 Å. There are two shorter (2.46 Å) and two longer (2.75 Å) Pr(1)-O(2) bond lengths. W(1) is bonded in a 6-coordinate geometry to one O(2), one O(4), two equivalent O(1), and two equivalent O(3) atoms. The W(1)-O(2) bond length is 1.84 Å. The W(1)-O(4) bond length is 1.79 Å. There is one shorter (1.79 Å) and one longer (2.31 Å) W(1)-O(1) bond length. There is one shorter (1.96 Å) and one longer (2.11 Å) W(1)-O(3) bond length. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Rb(1) and two equivalent W(1) atoms. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Rb(1), two equivalent Pr(1), and one W(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Rb(1), one Pr(1), and two equivalent W(1) atoms. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to two equivalent Rb(1), one Pr(1), and one W(1) atom.