BiAlO3 crystallizes in the trigonal R3c space group. Al(1) is bonded to six equivalent O(1) atoms to form corner-sharing AlO6 octahedra. The corner-sharing octahedral tilt angles are 18°. Bi(1) is bonded in a 6-coordinate geometry to six equivalent O(1) atoms. O(1) is bonded in a distorted see-saw-like geometry to two equivalent Al(1) and two equivalent Bi(1) atoms.
BiAlO3 crystallizes in the trigonal R3c space group. Al(1) is bonded to six equivalent O(1) atoms to form corner-sharing AlO6 octahedra. The corner-sharing octahedral tilt angles are 18°. There are three shorter (1.90 Å) and three longer (2.00 Å) Al(1)-O(1) bond lengths. Bi(1) is bonded in a 6-coordinate geometry to six equivalent O(1) atoms. There are three shorter (2.35 Å) and three longer (2.48 Å) Bi(1)-O(1) bond lengths. O(1) is bonded in a distorted see-saw-like geometry to two equivalent Al(1) and two equivalent Bi(1) atoms.