FeO2 is trigonal omega-like structured and crystallizes in the tetragonal I4_1/amd 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 tetragonal I4_1/amd space group. Fe(1) is bonded to six equivalent O(1) atoms to form edge-sharing FeO6 octahedra. There are two shorter (1.87 Å) and four longer (2.03 Å) Fe(1)-O(1) bond lengths. O(1) is bonded in a distorted T-shaped geometry to three equivalent Fe(1) atoms.