FeAlO3 is Orthorhombic Perovskite structured and crystallizes in the orthorhombic Pnma space group. Fe(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form FeO6 octahedra that share corners with six equivalent Fe(1)O6 octahedra and corners with eight equivalent Al(1)O4 trigonal pyramids. The corner-sharing octahedral tilt angles are 50°. Al(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form distorted AlO4 trigonal pyramids that share corners with eight equivalent Fe(1)O6 octahedra and corners with two equivalent Al(1)O4 trigonal pyramids. The corner-sharing octahedral tilt angles range from 60-83°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Fe(1) and one Al(1) atom. In the second O site, O(2) is bonded to two equivalent Fe(1) and two equivalent Al(1) atoms to form distorted corner-sharing OAl2Fe2 trigonal pyramids.
FeAlO3 is Orthorhombic Perovskite structured and crystallizes in the orthorhombic Pnma space group. Fe(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form FeO6 octahedra that share corners with six equivalent Fe(1)O6 octahedra and corners with eight equivalent Al(1)O4 trigonal pyramids. The corner-sharing octahedral tilt angles are 50°. Both Fe(1)-O(2) bond lengths are 2.05 Å. There are two shorter (1.90 Å) and two longer (1.93 Å) Fe(1)-O(1) bond lengths. Al(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form distorted AlO4 trigonal pyramids that share corners with eight equivalent Fe(1)O6 octahedra and corners with two equivalent Al(1)O4 trigonal pyramids. The corner-sharing octahedral tilt angles range from 60-83°. Both Al(1)-O(1) bond lengths are 1.84 Å. There is one shorter (1.86 Å) and one longer (1.88 Å) Al(1)-O(2) bond length. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Fe(1) and one Al(1) atom. In the second O site, O(2) is bonded to two equivalent Fe(1) and two equivalent Al(1) atoms to form distorted corner-sharing OAl2Fe2 trigonal pyramids.