KV6O11 crystallizes in the hexagonal P6_3mc space group. K(1) is bonded to three equivalent O(1), three equivalent O(2), and six equivalent O(3) atoms to form KO12 cuboctahedra that share corners with six equivalent K(1)O12 cuboctahedra, edges with six equivalent V(1)O6 octahedra, edges with three equivalent V(4)O5 trigonal bipyramids, faces with three equivalent V(2)O6 octahedra, and faces with three equivalent V(3)O6 octahedra. There are four inequivalent V sites. In the first V site, V(1) is bonded to one O(4), one O(5), two equivalent O(1), and two equivalent O(2) atoms to form VO6 octahedra that share corners with two equivalent V(2)O6 octahedra, corners with two equivalent V(3)O6 octahedra, corners with two equivalent V(4)O5 trigonal bipyramids, edges with two equivalent K(1)O12 cuboctahedra, and edges with four equivalent V(1)O6 octahedra. The corner-sharing octahedral tilt angles are 53°. In the second V site, V(2) is bonded to three equivalent O(1) and three equivalent O(3) atoms to form VO6 octahedra that share corners with six equivalent V(1)O6 octahedra, corners with three equivalent V(4)O5 trigonal bipyramids, faces with three equivalent K(1)O12 cuboctahedra, and  a faceface with one V(3)O6 octahedra. The corner-sharing octahedral tilt angles are 53°. In the third V site, V(3) is bonded to three equivalent O(2) and three equivalent O(3) atoms to form VO6 octahedra that share corners with six equivalent V(1)O6 octahedra, corners with three equivalent V(4)O5 trigonal bipyramids, faces with three equivalent K(1)O12 cuboctahedra, and  a faceface with one V(2)O6 octahedra. The corner-sharing octahedral tilt angles are 53°. In the fourth V site, V(4) is bonded to one O(4), one O(5), and three equivalent O(3) atoms to form VO5 trigonal bipyramids that share corners with three equivalent V(2)O6 octahedra, corners with three equivalent V(3)O6 octahedra, corners with six equivalent V(1)O6 octahedra, and edges with three equivalent K(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 41-56°. There are five inequivalent O sites. In the first O site, O(4) is bonded in a rectangular see-saw-like geometry to one V(4) and three equivalent V(1) atoms. In the second O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one V(4) and three equivalent V(1) atoms. In the third O site, O(1) is bonded in a 3-coordinate geometry to one K(1), one V(2), and two equivalent V(1) atoms. In the fourth O site, O(2) is bonded in a 4-coordinate geometry to one K(1), one V(3), and two equivalent V(1) atoms. In the fifth O site, O(3) is bonded in a 3-coordinate geometry to two equivalent K(1), one V(2), one V(3), and one V(4) atom.
KV6O11 crystallizes in the hexagonal P6_3mc space group. K(1) is bonded to three equivalent O(1), three equivalent O(2), and six equivalent O(3) atoms to form KO12 cuboctahedra that share corners with six equivalent K(1)O12 cuboctahedra, edges with six equivalent V(1)O6 octahedra, edges with three equivalent V(4)O5 trigonal bipyramids, faces with three equivalent V(2)O6 octahedra, and faces with three equivalent V(3)O6 octahedra. All K(1)-O(1) bond lengths are 2.86 Å. All K(1)-O(2) bond lengths are 2.83 Å. All K(1)-O(3) bond lengths are 2.97 Å. There are four inequivalent V sites. In the first V site, V(1) is bonded to one O(4), one O(5), two equivalent O(1), and two equivalent O(2) atoms to form VO6 octahedra that share corners with two equivalent V(2)O6 octahedra, corners with two equivalent V(3)O6 octahedra, corners with two equivalent V(4)O5 trigonal bipyramids, edges with two equivalent K(1)O12 cuboctahedra, and edges with four equivalent V(1)O6 octahedra. The corner-sharing octahedral tilt angles are 53°. The V(1)-O(4) bond length is 2.08 Å. The V(1)-O(5) bond length is 2.07 Å. Both V(1)-O(1) bond lengths are 1.97 Å. Both V(1)-O(2) bond lengths are 1.97 Å. In the second V site, V(2) is bonded to three equivalent O(1) and three equivalent O(3) atoms to form VO6 octahedra that share corners with six equivalent V(1)O6 octahedra, corners with three equivalent V(4)O5 trigonal bipyramids, faces with three equivalent K(1)O12 cuboctahedra, and  a faceface with one V(3)O6 octahedra. The corner-sharing octahedral tilt angles are 53°. All V(2)-O(1) bond lengths are 2.00 Å. All V(2)-O(3) bond lengths are 2.09 Å. In the third V site, V(3) is bonded to three equivalent O(2) and three equivalent O(3) atoms to form VO6 octahedra that share corners with six equivalent V(1)O6 octahedra, corners with three equivalent V(4)O5 trigonal bipyramids, faces with three equivalent K(1)O12 cuboctahedra, and  a faceface with one V(2)O6 octahedra. The corner-sharing octahedral tilt angles are 53°. All V(3)-O(2) bond lengths are 2.00 Å. All V(3)-O(3) bond lengths are 2.10 Å. In the fourth V site, V(4) is bonded to one O(4), one O(5), and three equivalent O(3) atoms to form VO5 trigonal bipyramids that share corners with three equivalent V(2)O6 octahedra, corners with three equivalent V(3)O6 octahedra, corners with six equivalent V(1)O6 octahedra, and edges with three equivalent K(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 41-56°. The V(4)-O(4) bond length is 2.12 Å. The V(4)-O(5) bond length is 2.22 Å. All V(4)-O(3) bond lengths are 1.86 Å. There are five inequivalent O sites. In the first O site, O(4) is bonded in a rectangular see-saw-like geometry to one V(4) and three equivalent V(1) atoms. In the second O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one V(4) and three equivalent V(1) atoms. In the third O site, O(1) is bonded in a 3-coordinate geometry to one K(1), one V(2), and two equivalent V(1) atoms. In the fourth O site, O(2) is bonded in a 4-coordinate geometry to one K(1), one V(3), and two equivalent V(1) atoms. In the fifth O site, O(3) is bonded in a 3-coordinate geometry to two equivalent K(1), one V(2), one V(3), and one V(4) atom.