KZn4SbO7 crystallizes in the hexagonal P6_3mc space group. K(1) is bonded to six equivalent O(2) and six equivalent O(3) atoms to form KO12 cuboctahedra that share corners with twelve equivalent K(1)O12 cuboctahedra, edges with three equivalent Zn(1)O4 tetrahedra, edges with nine equivalent Zn(2)O4 tetrahedra, and faces with four equivalent Sb(1)O6 octahedra. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(1) and three equivalent O(2) atoms to form ZnO4 tetrahedra that share corners with three equivalent Sb(1)O6 octahedra, corners with six equivalent Zn(2)O4 tetrahedra, and edges with three equivalent K(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 52°. In the second Zn site, Zn(2) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form ZnO4 tetrahedra that share corners with three equivalent Sb(1)O6 octahedra, corners with two equivalent Zn(1)O4 tetrahedra, corners with four equivalent Zn(2)O4 tetrahedra, and edges with three equivalent K(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 49-53°. Sb(1) is bonded to three equivalent O(2) and three equivalent O(3) atoms to form SbO6 octahedra that share corners with three equivalent Zn(1)O4 tetrahedra, corners with nine equivalent Zn(2)O4 tetrahedra, and faces with four equivalent K(1)O12 cuboctahedra. There are three inequivalent O sites. In the first O site, O(1) is bonded in a tetrahedral geometry to one Zn(1) and three equivalent Zn(2) atoms. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent K(1), one Zn(1), one Zn(2), and one Sb(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent K(1), two equivalent Zn(2), and one Sb(1) atom.
KZn4SbO7 crystallizes in the hexagonal P6_3mc space group. K(1) is bonded to six equivalent O(2) and six equivalent O(3) atoms to form KO12 cuboctahedra that share corners with twelve equivalent K(1)O12 cuboctahedra, edges with three equivalent Zn(1)O4 tetrahedra, edges with nine equivalent Zn(2)O4 tetrahedra, and faces with four equivalent Sb(1)O6 octahedra. All K(1)-O(2) bond lengths are 3.12 Å. There are three shorter (3.09 Å) and three longer (3.12 Å) K(1)-O(3) bond lengths. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(1) and three equivalent O(2) atoms to form ZnO4 tetrahedra that share corners with three equivalent Sb(1)O6 octahedra, corners with six equivalent Zn(2)O4 tetrahedra, and edges with three equivalent K(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 52°. The Zn(1)-O(1) bond length is 1.97 Å. All Zn(1)-O(2) bond lengths are 2.02 Å. In the second Zn site, Zn(2) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form ZnO4 tetrahedra that share corners with three equivalent Sb(1)O6 octahedra, corners with two equivalent Zn(1)O4 tetrahedra, corners with four equivalent Zn(2)O4 tetrahedra, and edges with three equivalent K(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 49-53°. The Zn(2)-O(1) bond length is 1.94 Å. The Zn(2)-O(2) bond length is 1.98 Å. Both Zn(2)-O(3) bond lengths are 1.98 Å. Sb(1) is bonded to three equivalent O(2) and three equivalent O(3) atoms to form SbO6 octahedra that share corners with three equivalent Zn(1)O4 tetrahedra, corners with nine equivalent Zn(2)O4 tetrahedra, and faces with four equivalent K(1)O12 cuboctahedra. All Sb(1)-O(2) bond lengths are 2.04 Å. All Sb(1)-O(3) bond lengths are 2.04 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a tetrahedral geometry to one Zn(1) and three equivalent Zn(2) atoms. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent K(1), one Zn(1), one Zn(2), and one Sb(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent K(1), two equivalent Zn(2), and one Sb(1) atom.