RbHo(MoO4)2 crystallizes in the orthorhombic Pbcn space group. Rb(1) is bonded in a 6-coordinate geometry to two equivalent O(4) and four equivalent O(1) atoms. Ho(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(4), and four equivalent O(3) atoms. Mo(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are four inequivalent O sites. In the first O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Ho(1) and one Mo(1) atom. In the second O site, O(4) is bonded in a 2-coordinate geometry to one Rb(1), one Ho(1), and one Mo(1) atom. In the third O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Rb(1) and one Mo(1) atom. In the fourth O site, O(2) is bonded in a bent 120 degrees geometry to one Ho(1) and one Mo(1) atom.
RbHo(MoO4)2 crystallizes in the orthorhombic Pbcn space group. Rb(1) is bonded in a 6-coordinate geometry to two equivalent O(4) and four equivalent O(1) atoms. Both Rb(1)-O(4) bond lengths are 3.08 Å. There are two shorter (2.85 Å) and two longer (2.94 Å) Rb(1)-O(1) bond lengths. Ho(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(4), and four equivalent O(3) atoms. Both Ho(1)-O(2) bond lengths are 2.29 Å. Both Ho(1)-O(4) bond lengths are 2.28 Å. There are two shorter (2.43 Å) and two longer (2.58 Å) Ho(1)-O(3) bond lengths. Mo(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. The Mo(1)-O(1) bond length is 1.76 Å. The Mo(1)-O(2) bond length is 1.80 Å. The Mo(1)-O(3) bond length is 1.86 Å. The Mo(1)-O(4) bond length is 1.82 Å. There are four inequivalent O sites. In the first O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Ho(1) and one Mo(1) atom. In the second O site, O(4) is bonded in a 2-coordinate geometry to one Rb(1), one Ho(1), and one Mo(1) atom. In the third O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Rb(1) and one Mo(1) atom. In the fourth O site, O(2) is bonded in a bent 120 degrees geometry to one Ho(1) and one Mo(1) atom.