KUVO6 crystallizes in the monoclinic P2_1/c space group. K(1) is bonded in a 9-coordinate geometry to one O(3), one O(6), two equivalent O(2), two equivalent O(4), and three equivalent O(5) atoms. U(1) is bonded to one O(2), one O(3), one O(4), two equivalent O(1), and two equivalent O(6) atoms to form distorted UO7 pentagonal bipyramids that share corners with two equivalent U(1)O7 pentagonal bipyramids, corners with two equivalent V(1)O5 trigonal bipyramids,  an edgeedge with one U(1)O7 pentagonal bipyramid, and edges with two equivalent V(1)O5 trigonal bipyramids. V(1) is bonded to one O(1), one O(5), one O(6), and two equivalent O(3) atoms to form distorted VO5 trigonal bipyramids that share corners with two equivalent U(1)O7 pentagonal bipyramids, edges with two equivalent U(1)O7 pentagonal bipyramids, and  an edgeedge with one V(1)O5 trigonal bipyramid. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent U(1) and one V(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to two equivalent K(1) and one U(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one K(1), one U(1), and two equivalent V(1) atoms. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to two equivalent K(1) and one U(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to three equivalent K(1) and one V(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one K(1), two equivalent U(1), and one V(1) atom.
KUVO6 crystallizes in the monoclinic P2_1/c space group. K(1) is bonded in a 9-coordinate geometry to one O(3), one O(6), two equivalent O(2), two equivalent O(4), and three equivalent O(5) atoms. The K(1)-O(3) bond length is 3.23 Å. The K(1)-O(6) bond length is 3.22 Å. There is one shorter (3.25 Å) and one longer (3.34 Å) K(1)-O(2) bond length. There is one shorter (2.88 Å) and one longer (2.96 Å) K(1)-O(4) bond length. There is one shorter (2.93 Å) and two longer (3.25 Å) K(1)-O(5) bond lengths. U(1) is bonded to one O(2), one O(3), one O(4), two equivalent O(1), and two equivalent O(6) atoms to form distorted UO7 pentagonal bipyramids that share corners with two equivalent U(1)O7 pentagonal bipyramids, corners with two equivalent V(1)O5 trigonal bipyramids,  an edgeedge with one U(1)O7 pentagonal bipyramid, and edges with two equivalent V(1)O5 trigonal bipyramids. The U(1)-O(2) bond length is 1.83 Å. The U(1)-O(3) bond length is 2.33 Å. The U(1)-O(4) bond length is 1.84 Å. There is one shorter (2.34 Å) and one longer (2.37 Å) U(1)-O(1) bond length. There is one shorter (2.35 Å) and one longer (2.37 Å) U(1)-O(6) bond length. V(1) is bonded to one O(1), one O(5), one O(6), and two equivalent O(3) atoms to form distorted VO5 trigonal bipyramids that share corners with two equivalent U(1)O7 pentagonal bipyramids, edges with two equivalent U(1)O7 pentagonal bipyramids, and  an edgeedge with one V(1)O5 trigonal bipyramid. The V(1)-O(1) bond length is 1.83 Å. The V(1)-O(5) bond length is 1.64 Å. The V(1)-O(6) bond length is 1.85 Å. There is one shorter (1.91 Å) and one longer (1.96 Å) V(1)-O(3) bond length. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent U(1) and one V(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to two equivalent K(1) and one U(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one K(1), one U(1), and two equivalent V(1) atoms. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to two equivalent K(1) and one U(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to three equivalent K(1) and one V(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one K(1), two equivalent U(1), and one V(1) atom.