Fe2O3 is Corundum-like structured and crystallizes in the orthorhombic Pbcn space group. Fe(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form a mixture of distorted edge, corner, and face-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 51-71°. There are two inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Fe(1) atoms to form a mixture of distorted edge and corner-sharing OFe4 tetrahedra. In the second O site, O(2) is bonded to four equivalent Fe(1) atoms to form a mixture of distorted edge and corner-sharing OFe4 trigonal pyramids.
Fe2O3 is Corundum-like structured and crystallizes in the orthorhombic Pbcn space group. Fe(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form a mixture of distorted edge, corner, and face-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 51-71°. There is one shorter (2.01 Å) and one longer (2.10 Å) Fe(1)-O(2) bond length. There are a spread of Fe(1)-O(1) bond distances ranging from 2.01-2.17 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Fe(1) atoms to form a mixture of distorted edge and corner-sharing OFe4 tetrahedra. In the second O site, O(2) is bonded to four equivalent Fe(1) atoms to form a mixture of distorted edge and corner-sharing OFe4 trigonal pyramids.