RbDy(WO4)2 crystallizes in the monoclinic P2_1/c space group. Rb(1) is bonded in a 8-coordinate geometry to one O(7), one O(8), two equivalent O(3), two equivalent O(5), and two equivalent O(6) atoms. Dy(1) is bonded in a 8-coordinate geometry to one O(2), one O(3), one O(4), one O(7), two equivalent O(1), and two equivalent O(8) atoms. There are two inequivalent W sites. In the first W site, W(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(5), one O(7), and one O(8) atom. In the second W site, W(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(6), and one O(7) atom. There are eight inequivalent O sites. In the first O site, O(8) is bonded in a 4-coordinate geometry to one Rb(1), two equivalent Dy(1), and one W(1) atom. In the second O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Dy(1), one W(1), and one W(2) atom. In the third O site, O(2) is bonded in a 3-coordinate geometry to one Dy(1), one W(1), and one W(2) atom. In the fourth O site, O(3) is bonded in a 2-coordinate geometry to two equivalent Rb(1), one Dy(1), and one W(2) atom. In the fifth O site, O(4) is bonded in a bent 150 degrees geometry to one Dy(1) and one W(2) atom. In the sixth O site, O(5) is bonded in a distorted single-bond geometry to two equivalent Rb(1) and one W(1) atom. In the seventh O site, O(6) is bonded in a 3-coordinate geometry to two equivalent Rb(1) and one W(2) atom. In the eighth O site, O(7) is bonded in a 4-coordinate geometry to one Rb(1), one Dy(1), one W(1), and one W(2) atom.
RbDy(WO4)2 crystallizes in the monoclinic P2_1/c space group. Rb(1) is bonded in a 8-coordinate geometry to one O(7), one O(8), two equivalent O(3), two equivalent O(5), and two equivalent O(6) atoms. The Rb(1)-O(7) bond length is 3.20 Å. The Rb(1)-O(8) bond length is 3.20 Å. There is one shorter (3.12 Å) and one longer (3.21 Å) Rb(1)-O(3) bond length. There is one shorter (3.09 Å) and one longer (3.20 Å) Rb(1)-O(5) bond length. There is one shorter (2.84 Å) and one longer (2.92 Å) Rb(1)-O(6) bond length. Dy(1) is bonded in a 8-coordinate geometry to one O(2), one O(3), one O(4), one O(7), two equivalent O(1), and two equivalent O(8) atoms. The Dy(1)-O(2) bond length is 2.33 Å. The Dy(1)-O(3) bond length is 2.28 Å. The Dy(1)-O(4) bond length is 2.23 Å. The Dy(1)-O(7) bond length is 2.38 Å. There is one shorter (2.35 Å) and one longer (2.88 Å) Dy(1)-O(1) bond length. There is one shorter (2.28 Å) and one longer (2.67 Å) Dy(1)-O(8) bond length. There are two inequivalent W sites. In the first W site, W(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(5), one O(7), and one O(8) atom. The W(1)-O(1) bond length is 1.91 Å. The W(1)-O(2) bond length is 2.05 Å. The W(1)-O(5) bond length is 1.76 Å. The W(1)-O(7) bond length is 2.01 Å. The W(1)-O(8) bond length is 1.86 Å. In the second W site, W(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(6), and one O(7) atom. The W(2)-O(1) bond length is 2.39 Å. The W(2)-O(2) bond length is 2.13 Å. The W(2)-O(3) bond length is 1.85 Å. The W(2)-O(4) bond length is 1.84 Å. The W(2)-O(6) bond length is 1.77 Å. The W(2)-O(7) bond length is 2.09 Å. There are eight inequivalent O sites. In the first O site, O(8) is bonded in a 4-coordinate geometry to one Rb(1), two equivalent Dy(1), and one W(1) atom. In the second O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Dy(1), one W(1), and one W(2) atom. In the third O site, O(2) is bonded in a 3-coordinate geometry to one Dy(1), one W(1), and one W(2) atom. In the fourth O site, O(3) is bonded in a 2-coordinate geometry to two equivalent Rb(1), one Dy(1), and one W(2) atom. In the fifth O site, O(4) is bonded in a bent 150 degrees geometry to one Dy(1) and one W(2) atom. In the sixth O site, O(5) is bonded in a distorted single-bond geometry to two equivalent Rb(1) and one W(1) atom. In the seventh O site, O(6) is bonded in a 3-coordinate geometry to two equivalent Rb(1) and one W(2) atom. In the eighth O site, O(7) is bonded in a 4-coordinate geometry to one Rb(1), one Dy(1), one W(1), and one W(2) atom.