KUSiHO6 crystallizes in the monoclinic P2_1 space group. K(1) is bonded in a 7-coordinate geometry to one O(3), one O(5), one O(6), two equivalent O(1), and two equivalent O(4) atoms. U(1) is bonded to one O(1), one O(4), one O(5), two equivalent O(2), and two equivalent O(3) atoms to form distorted UO7 pentagonal bipyramids that share corners with three equivalent Si(1)O4 tetrahedra, edges with two equivalent U(1)O7 pentagonal bipyramids, and  an edgeedge with one Si(1)O4 tetrahedra. Si(1) is bonded to one O(2), one O(3), one O(5), and one O(6) atom to form SiO4 tetrahedra that share corners with three equivalent U(1)O7 pentagonal bipyramids and  an edgeedge with one U(1)O7 pentagonal bipyramid. H(1) is bonded in a single-bond geometry to one O(6) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent K(1) and one U(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to two equivalent U(1) and one Si(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one K(1), two equivalent U(1), and one Si(1) atom. 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 bent 150 degrees geometry to one K(1), one U(1), and one Si(1) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one K(1), one Si(1), and one H(1) atom.
KUSiHO6 crystallizes in the monoclinic P2_1 space group. K(1) is bonded in a 7-coordinate geometry to one O(3), one O(5), one O(6), two equivalent O(1), and two equivalent O(4) atoms. The K(1)-O(3) bond length is 2.97 Å. The K(1)-O(5) bond length is 3.21 Å. The K(1)-O(6) bond length is 2.82 Å. There is one shorter (2.91 Å) and one longer (3.17 Å) K(1)-O(1) bond length. There is one shorter (2.72 Å) and one longer (2.81 Å) K(1)-O(4) bond length. U(1) is bonded to one O(1), one O(4), one O(5), two equivalent O(2), and two equivalent O(3) atoms to form distorted UO7 pentagonal bipyramids that share corners with three equivalent Si(1)O4 tetrahedra, edges with two equivalent U(1)O7 pentagonal bipyramids, and  an edgeedge with one Si(1)O4 tetrahedra. The U(1)-O(1) bond length is 1.85 Å. The U(1)-O(4) bond length is 1.85 Å. The U(1)-O(5) bond length is 2.21 Å. There is one shorter (2.30 Å) and one longer (2.51 Å) U(1)-O(2) bond length. There is one shorter (2.34 Å) and one longer (2.49 Å) U(1)-O(3) bond length. Si(1) is bonded to one O(2), one O(3), one O(5), and one O(6) atom to form SiO4 tetrahedra that share corners with three equivalent U(1)O7 pentagonal bipyramids and  an edgeedge with one U(1)O7 pentagonal bipyramid. The Si(1)-O(2) bond length is 1.64 Å. The Si(1)-O(3) bond length is 1.65 Å. The Si(1)-O(5) bond length is 1.62 Å. The Si(1)-O(6) bond length is 1.67 Å. H(1) is bonded in a single-bond geometry to one O(6) atom. The H(1)-O(6) bond length is 0.98 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent K(1) and one U(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to two equivalent U(1) and one Si(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one K(1), two equivalent U(1), and one Si(1) atom. 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 bent 150 degrees geometry to one K(1), one U(1), and one Si(1) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one K(1), one Si(1), and one H(1) atom.