UO3 is Cementite structured and crystallizes in the orthorhombic P2_12_12_1 space group. U(1) is bonded in a 7-coordinate geometry to two equivalent O(2), two equivalent O(3), and three equivalent O(1) atoms. There are three inequivalent O sites. In the first O site, O(2) is bonded in a distorted linear geometry to two equivalent U(1) atoms. In the second O site, O(1) is bonded in a distorted trigonal planar geometry to three equivalent U(1) atoms. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent U(1) atoms.
UO3 is Cementite structured and crystallizes in the orthorhombic P2_12_12_1 space group. U(1) is bonded in a 7-coordinate geometry to two equivalent O(2), two equivalent O(3), and three equivalent O(1) atoms. There is one shorter (1.90 Å) and one longer (2.33 Å) U(1)-O(2) bond length. There is one shorter (1.87 Å) and one longer (2.50 Å) U(1)-O(3) bond length. There are a spread of U(1)-O(1) bond distances ranging from 2.21-2.42 Å. There are three inequivalent O sites. In the first O site, O(2) is bonded in a distorted linear geometry to two equivalent U(1) atoms. In the second O site, O(1) is bonded in a distorted trigonal planar geometry to three equivalent U(1) atoms. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent U(1) atoms.