KGd(WO4)2 crystallizes in the monoclinic C2/c space group. K(1) is bonded in a 10-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and four equivalent O(4) atoms. Gd(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. W(1) is bonded to one O(1), one O(3), two equivalent O(2), and two equivalent O(4) atoms to form a mixture of corner and edge-sharing WO6 octahedra. The corner-sharing octahedral tilt angles are 41°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one K(1), one Gd(1), and one W(1) atom. In the second O site, O(2) is bonded to one K(1), one Gd(1), and two equivalent W(1) atoms to form a mixture of distorted corner and edge-sharing OKGdW2 tetrahedra. In the third O site, O(3) is bonded in a 2-coordinate geometry to one K(1), one Gd(1), and one W(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to two equivalent K(1) and two equivalent W(1) atoms.
KGd(WO4)2 crystallizes in the monoclinic C2/c space group. K(1) is bonded in a 10-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and four equivalent O(4) atoms. Both K(1)-O(1) bond lengths are 2.88 Å. Both K(1)-O(2) bond lengths are 2.98 Å. Both K(1)-O(3) bond lengths are 3.11 Å. There are two shorter (2.91 Å) and two longer (3.03 Å) K(1)-O(4) bond lengths. Gd(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. Both Gd(1)-O(1) bond lengths are 2.31 Å. Both Gd(1)-O(2) bond lengths are 2.34 Å. Both Gd(1)-O(3) bond lengths are 2.34 Å. W(1) is bonded to one O(1), one O(3), two equivalent O(2), and two equivalent O(4) atoms to form a mixture of corner and edge-sharing WO6 octahedra. The corner-sharing octahedral tilt angles are 41°. The W(1)-O(1) bond length is 1.83 Å. The W(1)-O(3) bond length is 1.85 Å. There is one shorter (2.01 Å) and one longer (2.12 Å) W(1)-O(2) bond length. There is one shorter (1.89 Å) and one longer (2.11 Å) W(1)-O(4) bond length. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one K(1), one Gd(1), and one W(1) atom. In the second O site, O(2) is bonded to one K(1), one Gd(1), and two equivalent W(1) atoms to form a mixture of distorted corner and edge-sharing OKGdW2 tetrahedra. In the third O site, O(3) is bonded in a 2-coordinate geometry to one K(1), one Gd(1), and one W(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to two equivalent K(1) and two equivalent W(1) atoms.