LiSeO3 crystallizes in the orthorhombic P2_12_12_1 space group. Li(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form corner-sharing LiO4 tetrahedra. Se(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(2), and one O(3) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to two equivalent Li(1) and one Se(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Li(1) and one Se(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Li(1) and one Se(1) atom.
LiSeO3 crystallizes in the orthorhombic P2_12_12_1 space group. Li(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form corner-sharing LiO4 tetrahedra. The Li(1)-O(2) bond length is 1.98 Å. The Li(1)-O(3) bond length is 1.96 Å. There is one shorter (1.99 Å) and one longer (2.00 Å) Li(1)-O(1) bond length. Se(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(2), and one O(3) atom. The Se(1)-O(1) bond length is 1.70 Å. The Se(1)-O(2) bond length is 1.67 Å. The Se(1)-O(3) bond length is 1.69 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to two equivalent Li(1) and one Se(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Li(1) and one Se(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Li(1) and one Se(1) atom.