CdSeO4 crystallizes in the orthorhombic Pmn2_1 space group. Cd(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), and four equivalent O(3) atoms. Se(1) is bonded in a tetrahedral geometry to one O(1), one O(2), and two equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Cd(1) and one Se(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Cd(1) and one Se(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Cd(1) and one Se(1) atom.
CdSeO4 crystallizes in the orthorhombic Pmn2_1 space group. Cd(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), and four equivalent O(3) atoms. The Cd(1)-O(1) bond length is 2.28 Å. The Cd(1)-O(2) bond length is 2.37 Å. There are two shorter (2.28 Å) and two longer (2.64 Å) Cd(1)-O(3) bond lengths. Se(1) is bonded in a tetrahedral geometry to one O(1), one O(2), and two equivalent O(3) atoms. The Se(1)-O(1) bond length is 1.67 Å. The Se(1)-O(2) bond length is 1.67 Å. Both Se(1)-O(3) bond lengths are 1.69 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Cd(1) and one Se(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Cd(1) and one Se(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Cd(1) and one Se(1) atom.