U3O8 crystallizes in the hexagonal P-62m space group. U(1) is bonded to two equivalent O(1), two equivalent O(2), and three equivalent O(3) atoms to form a mixture of distorted edge and corner-sharing UO7 pentagonal bipyramids. There are three inequivalent O sites. In the first O site, O(3) is bonded in a distorted bent 150 degrees geometry to three equivalent U(1) atoms. In the second O site, O(1) is bonded in a linear geometry to two equivalent U(1) atoms. In the third O site, O(2) is bonded in a trigonal planar geometry to three equivalent U(1) atoms.
U3O8 crystallizes in the hexagonal P-62m space group. U(1) is bonded to two equivalent O(1), two equivalent O(2), and three equivalent O(3) atoms to form a mixture of distorted edge and corner-sharing UO7 pentagonal bipyramids. Both U(1)-O(1) bond lengths are 2.07 Å. Both U(1)-O(2) bond lengths are 2.21 Å. There are two shorter (2.13 Å) and one longer (2.69 Å) U(1)-O(3) bond length. There are three inequivalent O sites. In the first O site, O(3) is bonded in a distorted bent 150 degrees geometry to three equivalent U(1) atoms. In the second O site, O(1) is bonded in a linear geometry to two equivalent U(1) atoms. In the third O site, O(2) is bonded in a trigonal planar geometry to three equivalent U(1) atoms.