FeO2 is trigonal omega-like structured and crystallizes in the cubic Fd-3m space group. Fe(1) is bonded to six equivalent O(1) atoms to form edge-sharing FeO6 octahedra. O(1) is bonded in a distorted T-shaped geometry to three equivalent Fe(1) atoms.
FeO2 is trigonal omega-like structured and crystallizes in the cubic Fd-3m space group. Fe(1) is bonded to six equivalent O(1) atoms to form edge-sharing FeO6 octahedra. All Fe(1)-O(1) bond lengths are 1.94 Å. O(1) is bonded in a distorted T-shaped geometry to three equivalent Fe(1) atoms.