(FeO3)8O2 crystallizes in the orthorhombic Immm space group. The structure consists of two water atoms inside a FeO3 framework. In the FeO3 framework, Fe(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form corner-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 53-58°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to two equivalent Fe(1) and one O(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to two equivalent Fe(1) atoms. In the third O site, O(4) is bonded in a trigonal planar geometry to two equivalent Fe(1) and one O(4) atom.
(FeO3)8O2 crystallizes in the orthorhombic Immm space group. The structure consists of two water atoms inside a FeO3 framework. In the FeO3 framework, Fe(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form corner-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 53-58°. Both Fe(1)-O(1) bond lengths are 2.23 Å. Both Fe(1)-O(2) bond lengths are 1.82 Å. Both Fe(1)-O(4) bond lengths are 2.15 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to two equivalent Fe(1) and one O(1) atom. The O(1)-O(1) bond length is 1.37 Å. In the second O site, O(2) is bonded in a bent 120 degrees geometry to two equivalent Fe(1) atoms. In the third O site, O(4) is bonded in a trigonal planar geometry to two equivalent Fe(1) and one O(4) atom. The O(4)-O(4) bond length is 1.37 Å.