UO3 crystallizes in the trigonal P-3m1 space group. U(1) is bonded in a body-centered cubic geometry to two equivalent O(2) and six equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to three equivalent U(1) atoms. In the second O site, O(2) is bonded in a linear geometry to two equivalent U(1) atoms.
UO3 crystallizes in the trigonal P-3m1 space group. U(1) is bonded in a body-centered cubic geometry to two equivalent O(2) and six equivalent O(1) atoms. Both U(1)-O(2) bond lengths are 2.08 Å. All U(1)-O(1) bond lengths are 2.25 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to three equivalent U(1) atoms. In the second O site, O(2) is bonded in a linear geometry to two equivalent U(1) atoms.