SeO3 is Indium-like structured and crystallizes in the tetragonal P-42_1c space group. The structure is zero-dimensional and consists of two SeO3 clusters. Se(1) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form corner-sharing SeO4 tetrahedra. There are three inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one Se(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to two equivalent Se(1) atoms. In the third O site, O(3) is bonded in a single-bond geometry to one Se(1) atom.
SeO3 is Indium-like structured and crystallizes in the tetragonal P-42_1c space group. The structure is zero-dimensional and consists of two SeO3 clusters. Se(1) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form corner-sharing SeO4 tetrahedra. The Se(1)-O(1) bond length is 1.59 Å. The Se(1)-O(3) bond length is 1.59 Å. Both Se(1)-O(2) bond lengths are 1.80 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one Se(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to two equivalent Se(1) atoms. In the third O site, O(3) is bonded in a single-bond geometry to one Se(1) atom.