BiMnO3 is Orthorhombic Perovskite structured and crystallizes in the orthorhombic Pnma space group. Mn(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 33-35°. Bi(1) is bonded in a 8-coordinate geometry to two equivalent O(1) and six equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Mn(1) and two equivalent Bi(1) atoms to form distorted corner-sharing OMn2Bi2 tetrahedra. In the second O site, O(2) is bonded in a 5-coordinate geometry to two equivalent Mn(1) and three equivalent Bi(1) atoms.
BiMnO3 is Orthorhombic Perovskite structured and crystallizes in the orthorhombic Pnma space group. Mn(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 33-35°. Both Mn(1)-O(1) bond lengths are 2.03 Å. There are two shorter (1.96 Å) and two longer (2.22 Å) Mn(1)-O(2) bond lengths. Bi(1) is bonded in a 8-coordinate geometry to two equivalent O(1) and six equivalent O(2) atoms. There is one shorter (2.30 Å) and one longer (2.49 Å) Bi(1)-O(1) bond length. There are a spread of Bi(1)-O(2) bond distances ranging from 2.34-2.75 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Mn(1) and two equivalent Bi(1) atoms to form distorted corner-sharing OMn2Bi2 tetrahedra. In the second O site, O(2) is bonded in a 5-coordinate geometry to two equivalent Mn(1) and three equivalent Bi(1) atoms.