Fe2O3 is Corundum-like structured and crystallizes in the cubic Ia-3 space group. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to six equivalent O(1) atoms to form a mixture of distorted edge and corner-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 53-54°. In the second Fe site, Fe(2) is bonded to six equivalent O(1) atoms to form a mixture of edge and corner-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles are 53°. O(1) is bonded to one Fe(2) and three equivalent Fe(1) atoms to form a mixture of edge and corner-sharing OFe4 trigonal pyramids.
Fe2O3 is Corundum-like structured and crystallizes in the cubic Ia-3 space group. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to six equivalent O(1) atoms to form a mixture of distorted edge and corner-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 53-54°. There are a spread of Fe(1)-O(1) bond distances ranging from 2.01-2.09 Å. In the second Fe site, Fe(2) is bonded to six equivalent O(1) atoms to form a mixture of edge and corner-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles are 53°. All Fe(2)-O(1) bond lengths are 2.05 Å. O(1) is bonded to one Fe(2) and three equivalent Fe(1) atoms to form a mixture of edge and corner-sharing OFe4 trigonal pyramids.