KMoO2AsO4 crystallizes in the orthorhombic Pnma space group. K(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. Mo(1) is bonded to one O(1), one O(3), one O(4), one O(5), and two equivalent O(2) atoms to form distorted MoO6 octahedra that share corners with four equivalent As(1)O4 tetrahedra. As(1) is bonded to one O(3), one O(5), and two equivalent O(2) atoms to form AsO4 tetrahedra that share corners with four equivalent Mo(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-62°. There are five 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 Mo(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Mo(1) and one As(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent K(1), one Mo(1), and one As(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent K(1) and one Mo(1) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to two equivalent K(1), one Mo(1), and one As(1) atom.
KMoO2AsO4 crystallizes in the orthorhombic Pnma space group. K(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. Both K(1)-O(1) bond lengths are 3.06 Å. Both K(1)-O(3) bond lengths are 2.83 Å. Both K(1)-O(4) bond lengths are 2.65 Å. Both K(1)-O(5) bond lengths are 3.01 Å. Mo(1) is bonded to one O(1), one O(3), one O(4), one O(5), and two equivalent O(2) atoms to form distorted MoO6 octahedra that share corners with four equivalent As(1)O4 tetrahedra. The Mo(1)-O(1) bond length is 1.74 Å. The Mo(1)-O(3) bond length is 2.28 Å. The Mo(1)-O(4) bond length is 1.74 Å. The Mo(1)-O(5) bond length is 2.21 Å. Both Mo(1)-O(2) bond lengths are 2.03 Å. As(1) is bonded to one O(3), one O(5), and two equivalent O(2) atoms to form AsO4 tetrahedra that share corners with four equivalent Mo(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-62°. The As(1)-O(3) bond length is 1.72 Å. The As(1)-O(5) bond length is 1.72 Å. Both As(1)-O(2) bond lengths are 1.74 Å. There are five 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 Mo(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Mo(1) and one As(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent K(1), one Mo(1), and one As(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent K(1) and one Mo(1) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to two equivalent K(1), one Mo(1), and one As(1) atom.