KY(MoO4)2 crystallizes in the orthorhombic Pbcn space group. K(1) is bonded in a 6-coordinate geometry to two equivalent O(4) and four equivalent O(1) 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 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 bent 120 degrees geometry to one Y(1) and one Mo(1) atom. In the second O site, O(4) is bonded in a 3-coordinate geometry to one K(1), one Y(1), and one Mo(1) atom. In the third O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent K(1) and one Mo(1) atom. In the fourth O site, O(2) is bonded in a 3-coordinate geometry to two equivalent Y(1) and one Mo(1) atom.
KY(MoO4)2 crystallizes in the orthorhombic Pbcn space group. K(1) is bonded in a 6-coordinate geometry to two equivalent O(4) and four equivalent O(1) atoms. Both K(1)-O(4) bond lengths are 2.88 Å. There are two shorter (2.77 Å) and two longer (2.91 Å) K(1)-O(1) 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 2.31 Å. There are two shorter (2.45 Å) and two longer (2.52 Å) Y(1)-O(2) 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 1.75 Å. The Mo(1)-O(2) bond length is 1.87 Å. The Mo(1)-O(3) bond length is 1.80 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 bent 120 degrees geometry to one Y(1) and one Mo(1) atom. In the second O site, O(4) is bonded in a 3-coordinate geometry to one K(1), one Y(1), and one Mo(1) atom. In the third O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent K(1) and one Mo(1) atom. In the fourth O site, O(2) is bonded in a 3-coordinate geometry to two equivalent Y(1) and one Mo(1) atom.