CaAgAsO4 crystallizes in the orthorhombic Cmcm space group. Ca(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form CaO6 octahedra that share corners with six equivalent As(1)O4 tetrahedra and edges with two equivalent Ca(1)O6 octahedra. Ag(1) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(2) atoms. As(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form AsO4 tetrahedra that share corners with six equivalent Ca(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-52°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Ca(1), one Ag(1), and one As(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Ca(1), one Ag(1), and one As(1) atom.
CaAgAsO4 crystallizes in the orthorhombic Cmcm space group. Ca(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form CaO6 octahedra that share corners with six equivalent As(1)O4 tetrahedra and edges with two equivalent Ca(1)O6 octahedra. Both Ca(1)-O(1) bond lengths are 2.34 Å. All Ca(1)-O(2) bond lengths are 2.42 Å. Ag(1) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(2) atoms. Both Ag(1)-O(1) bond lengths are 2.30 Å. Both Ag(1)-O(2) bond lengths are 2.59 Å. As(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form AsO4 tetrahedra that share corners with six equivalent Ca(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-52°. Both As(1)-O(1) bond lengths are 1.71 Å. Both As(1)-O(2) bond lengths are 1.74 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Ca(1), one Ag(1), and one As(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Ca(1), one Ag(1), and one As(1) atom.