KSc(WO4)2 crystallizes in the trigonal P-3m1 space group. K(1) is bonded to six equivalent O(1) atoms to form distorted KO6 cuboctahedra that share corners with six equivalent W(1)O4 tetrahedra and faces with two equivalent Sc(1)O6 octahedra. Sc(1) is bonded to six equivalent O(1) atoms to form ScO6 octahedra that share corners with six equivalent W(1)O4 tetrahedra and faces with two equivalent K(1)O6 cuboctahedra. W(1) is bonded to one O(2) and three equivalent O(1) atoms to form WO4 tetrahedra that share corners with three equivalent K(1)O6 cuboctahedra and corners with three equivalent Sc(1)O6 octahedra. The corner-sharing octahedral tilt angles are 18°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one K(1), one Sc(1), and one W(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one W(1) atom.
KSc(WO4)2 crystallizes in the trigonal P-3m1 space group. K(1) is bonded to six equivalent O(1) atoms to form distorted KO6 cuboctahedra that share corners with six equivalent W(1)O4 tetrahedra and faces with two equivalent Sc(1)O6 octahedra. All K(1)-O(1) bond lengths are 3.13 Å. Sc(1) is bonded to six equivalent O(1) atoms to form ScO6 octahedra that share corners with six equivalent W(1)O4 tetrahedra and faces with two equivalent K(1)O6 cuboctahedra. All Sc(1)-O(1) bond lengths are 2.10 Å. W(1) is bonded to one O(2) and three equivalent O(1) atoms to form WO4 tetrahedra that share corners with three equivalent K(1)O6 cuboctahedra and corners with three equivalent Sc(1)O6 octahedra. The corner-sharing octahedral tilt angles are 18°. The W(1)-O(2) bond length is 1.78 Å. All W(1)-O(1) bond lengths are 1.83 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one K(1), one Sc(1), and one W(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one W(1) atom.