K2Cr2AsHO10 crystallizes in the trigonal P3_2 space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(2), one O(3), one O(4), one O(5), one O(8), and one O(9) atom. In the second K site, K(2) is bonded in a 9-coordinate geometry to one O(1), one O(10), one O(2), one O(3), one O(4), one O(6), one O(7), one O(8), and one O(9) atom. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form CrO4 tetrahedra that share  a cornercorner with one As(1)O4 tetrahedra. In the second Cr site, Cr(2) is bonded to one O(10), one O(7), one O(8), and one O(9) atom to form CrO4 tetrahedra that share  a cornercorner with one As(1)O4 tetrahedra. As(1) is bonded to one O(4), one O(5), one O(6), and one O(7) atom to form AsO4 tetrahedra that share  a cornercorner with one Cr(1)O4 tetrahedra and  a cornercorner with one Cr(2)O4 tetrahedra. H(1) is bonded in a linear geometry to one O(5) and one O(6) atom. There are ten inequivalent O sites. In the first O site, O(6) is bonded in a 3-coordinate geometry to one K(2), one As(1), and one H(1) atom. In the second O site, O(7) is bonded in a distorted bent 120 degrees geometry to one K(2), one Cr(2), and one As(1) atom. In the third O site, O(8) is bonded in a distorted single-bond geometry to one K(1), one K(2), and one Cr(2) atom. In the fourth O site, O(9) is bonded in a distorted single-bond geometry to one K(1), one K(2), and one Cr(2) atom. In the fifth O site, O(10) is bonded in a distorted single-bond geometry to one K(1), one K(2), and one Cr(2) atom. In the sixth O site, O(1) is bonded in a distorted single-bond geometry to one K(1), one K(2), and one Cr(1) atom. In the seventh O site, O(2) is bonded in a distorted single-bond geometry to one K(1), one K(2), and one Cr(1) atom. In the eighth O site, O(3) is bonded in a distorted single-bond geometry to one K(1), one K(2), and one Cr(1) atom. In the ninth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one K(1), one K(2), one Cr(1), and one As(1) atom. In the tenth O site, O(5) is bonded in a 2-coordinate geometry to one K(1), one As(1), and one H(1) atom.
K2Cr2AsHO10 crystallizes in the trigonal P3_2 space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(2), one O(3), one O(4), one O(5), one O(8), and one O(9) atom. The K(1)-O(1) bond length is 2.77 Å. The K(1)-O(10) bond length is 2.77 Å. The K(1)-O(2) bond length is 2.87 Å. The K(1)-O(3) bond length is 2.77 Å. The K(1)-O(4) bond length is 3.15 Å. The K(1)-O(5) bond length is 2.89 Å. The K(1)-O(8) bond length is 2.83 Å. The K(1)-O(9) bond length is 2.89 Å. In the second K site, K(2) is bonded in a 9-coordinate geometry to one O(1), one O(10), one O(2), one O(3), one O(4), one O(6), one O(7), one O(8), and one O(9) atom. The K(2)-O(1) bond length is 2.88 Å. The K(2)-O(10) bond length is 2.85 Å. The K(2)-O(2) bond length is 2.81 Å. The K(2)-O(3) bond length is 3.09 Å. The K(2)-O(4) bond length is 3.14 Å. The K(2)-O(6) bond length is 2.79 Å. The K(2)-O(7) bond length is 3.01 Å. The K(2)-O(8) bond length is 3.16 Å. The K(2)-O(9) bond length is 2.87 Å. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form CrO4 tetrahedra that share  a cornercorner with one As(1)O4 tetrahedra. The Cr(1)-O(1) bond length is 1.63 Å. The Cr(1)-O(2) bond length is 1.63 Å. The Cr(1)-O(3) bond length is 1.62 Å. The Cr(1)-O(4) bond length is 1.86 Å. In the second Cr site, Cr(2) is bonded to one O(10), one O(7), one O(8), and one O(9) atom to form CrO4 tetrahedra that share  a cornercorner with one As(1)O4 tetrahedra. The Cr(2)-O(10) bond length is 1.63 Å. The Cr(2)-O(7) bond length is 1.86 Å. The Cr(2)-O(8) bond length is 1.63 Å. The Cr(2)-O(9) bond length is 1.63 Å. As(1) is bonded to one O(4), one O(5), one O(6), and one O(7) atom to form AsO4 tetrahedra that share  a cornercorner with one Cr(1)O4 tetrahedra and  a cornercorner with one Cr(2)O4 tetrahedra. The As(1)-O(4) bond length is 1.76 Å. The As(1)-O(5) bond length is 1.67 Å. The As(1)-O(6) bond length is 1.74 Å. The As(1)-O(7) bond length is 1.75 Å. H(1) is bonded in a linear geometry to one O(5) and one O(6) atom. The H(1)-O(5) bond length is 1.51 Å. The H(1)-O(6) bond length is 1.04 Å. There are ten inequivalent O sites. In the first O site, O(6) is bonded in a 3-coordinate geometry to one K(2), one As(1), and one H(1) atom. In the second O site, O(7) is bonded in a distorted bent 120 degrees geometry to one K(2), one Cr(2), and one As(1) atom. In the third O site, O(8) is bonded in a distorted single-bond geometry to one K(1), one K(2), and one Cr(2) atom. In the fourth O site, O(9) is bonded in a distorted single-bond geometry to one K(1), one K(2), and one Cr(2) atom. In the fifth O site, O(10) is bonded in a distorted single-bond geometry to one K(1), one K(2), and one Cr(2) atom. In the sixth O site, O(1) is bonded in a distorted single-bond geometry to one K(1), one K(2), and one Cr(1) atom. In the seventh O site, O(2) is bonded in a distorted single-bond geometry to one K(1), one K(2), and one Cr(1) atom. In the eighth O site, O(3) is bonded in a distorted single-bond geometry to one K(1), one K(2), and one Cr(1) atom. In the ninth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one K(1), one K(2), one Cr(1), and one As(1) atom. In the tenth O site, O(5) is bonded in a 2-coordinate geometry to one K(1), one As(1), and one H(1) atom.