CaAsO6 crystallizes in the monoclinic Cc space group. Ca(1) is bonded in a 8-coordinate geometry to one O(1), one O(3), one O(4), one O(6), two equivalent O(2), and two equivalent O(5) atoms. As(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(5), and one O(6) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Ca(1), one As(1), and one O(4) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Ca(1) and one As(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to one Ca(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Ca(1) and one O(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to two equivalent Ca(1) and one As(1) atom. In the sixth O site, O(6) is bonded in a distorted L-shaped geometry to one Ca(1) and one As(1) atom.
CaAsO6 crystallizes in the monoclinic Cc space group. Ca(1) is bonded in a 8-coordinate geometry to one O(1), one O(3), one O(4), one O(6), two equivalent O(2), and two equivalent O(5) atoms. The Ca(1)-O(1) bond length is 3.04 Å. The Ca(1)-O(3) bond length is 2.49 Å. The Ca(1)-O(4) bond length is 2.70 Å. The Ca(1)-O(6) bond length is 2.51 Å. There is one shorter (2.44 Å) and one longer (2.46 Å) Ca(1)-O(2) bond length. There is one shorter (2.33 Å) and one longer (2.43 Å) Ca(1)-O(5) bond length. As(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(5), and one O(6) atom. The As(1)-O(1) bond length is 1.97 Å. The As(1)-O(2) bond length is 1.70 Å. The As(1)-O(5) bond length is 1.69 Å. The As(1)-O(6) bond length is 1.69 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Ca(1), one As(1), and one O(4) atom. The O(1)-O(4) bond length is 1.34 Å. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Ca(1) and one As(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to one Ca(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Ca(1) and one O(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to two equivalent Ca(1) and one As(1) atom. In the sixth O site, O(6) is bonded in a distorted L-shaped geometry to one Ca(1) and one As(1) atom.