RbY(MoO4)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. Y(1) is bonded in a 8-coordinate geometry to two equivalent O(3), two equivalent O(4), and four equivalent O(2) atoms. Mo(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 distorted single-bond geometry to two equivalent Rb(1) and two equivalent Mo(1) atoms. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Rb(1), two equivalent Y(1), and one Mo(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Rb(1), one Y(1), and two equivalent Mo(1) atoms. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to two equivalent Rb(1), one Y(1), and one Mo(1) atom.
RbY(MoO4)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 3.20 Å. Both Rb(1)-O(3) bond lengths are 3.11 Å. There are two shorter (2.85 Å) and two longer (2.86 Å) Rb(1)-O(1) bond lengths. There are two shorter (3.01 Å) and two longer (3.40 Å) Rb(1)-O(4) bond lengths. Y(1) is bonded in a 8-coordinate geometry to two equivalent O(3), two equivalent O(4), and four equivalent O(2) atoms. Both Y(1)-O(3) bond lengths are 2.31 Å. Both Y(1)-O(4) bond lengths are 2.33 Å. There are two shorter (2.39 Å) and two longer (2.72 Å) Y(1)-O(2) bond lengths. Mo(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 Mo(1)-O(2) bond length is 1.85 Å. The Mo(1)-O(4) bond length is 1.81 Å. There is one shorter (1.78 Å) and one longer (2.42 Å) Mo(1)-O(1) bond length. There is one shorter (2.00 Å) and one longer (2.13 Å) Mo(1)-O(3) bond length. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Rb(1) and two equivalent Mo(1) atoms. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Rb(1), two equivalent Y(1), and one Mo(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Rb(1), one Y(1), and two equivalent Mo(1) atoms. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to two equivalent Rb(1), one Y(1), and one Mo(1) atom.