CaSeO4 is Zircon-like structured and crystallizes in the orthorhombic Cmce space group. Ca(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent 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 3-coordinate geometry to two equivalent Ca(1) and one Se(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to two equivalent Ca(1) and one Se(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Ca(1) and one Se(1) atom.
CaSeO4 is Zircon-like structured and crystallizes in the orthorhombic Cmce space group. Ca(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms. There is one shorter (2.43 Å) and one longer (2.68 Å) Ca(1)-O(1) bond length. There is one shorter (2.42 Å) and one longer (2.45 Å) Ca(1)-O(2) bond length. There are two shorter (2.37 Å) and two longer (2.51 Å) Ca(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 1.65 Å. The Se(1)-O(2) bond length is 1.65 Å. Both Se(1)-O(3) bond lengths are 1.65 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Ca(1) and one Se(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to two equivalent Ca(1) and one Se(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Ca(1) and one Se(1) atom.