Bi3O5 crystallizes in the monoclinic C2/c space group. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 6-coordinate geometry to three equivalent O(1) and three equivalent O(2) atoms. In the second Bi site, Bi(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing BiO6 octahedra. The corner-sharing octahedral tilt angles are 33°. There are three inequivalent O sites. In the first O site, O(1) is bonded to one Bi(2) and three equivalent Bi(1) atoms to form a mixture of distorted corner and edge-sharing OBi4 tetrahedra. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Bi(2) and three equivalent Bi(1) atoms. In the third O site, O(3) is bonded in a bent 150 degrees geometry to two equivalent Bi(2) atoms.
Bi3O5 crystallizes in the monoclinic C2/c space group. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 6-coordinate geometry to three equivalent O(1) and three equivalent O(2) atoms. There are a spread of Bi(1)-O(1) bond distances ranging from 2.29-2.76 Å. There are a spread of Bi(1)-O(2) bond distances ranging from 2.25-2.79 Å. In the second Bi site, Bi(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing BiO6 octahedra. The corner-sharing octahedral tilt angles are 33°. Both Bi(2)-O(1) bond lengths are 2.35 Å. Both Bi(2)-O(2) bond lengths are 2.27 Å. Both Bi(2)-O(3) bond lengths are 2.17 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded to one Bi(2) and three equivalent Bi(1) atoms to form a mixture of distorted corner and edge-sharing OBi4 tetrahedra. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Bi(2) and three equivalent Bi(1) atoms. In the third O site, O(3) is bonded in a bent 150 degrees geometry to two equivalent Bi(2) atoms.