CoSeO3 is Orthorhombic Perovskite structured and crystallizes in the orthorhombic Pnma space group. Co(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles range from 49-55°. Se(1) is bonded in a trigonal non-coplanar geometry to one O(2) and two equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Co(1) and one Se(1) atom. In the second O site, O(2) is bonded in a trigonal non-coplanar geometry to two equivalent Co(1) and one Se(1) atom.
CoSeO3 is Orthorhombic Perovskite structured and crystallizes in the orthorhombic Pnma space group. Co(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles range from 49-55°. Both Co(1)-O(2) bond lengths are 2.16 Å. There are two shorter (2.10 Å) and two longer (2.24 Å) Co(1)-O(1) bond lengths. Se(1) is bonded in a trigonal non-coplanar geometry to one O(2) and two equivalent O(1) atoms. The Se(1)-O(2) bond length is 1.76 Å. Both Se(1)-O(1) bond lengths are 1.76 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Co(1) and one Se(1) atom. In the second O site, O(2) is bonded in a trigonal non-coplanar geometry to two equivalent Co(1) and one Se(1) atom.