Bi2O3 crystallizes in the hexagonal P6_3mc space group. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 7-coordinate geometry to three equivalent O(2) and four equivalent O(1) atoms. In the second Bi site, Bi(2) is bonded in a 3-coordinate geometry to three equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Bi(2) and four equivalent Bi(1) atoms. In the second O site, O(2) is bonded in a 3-coordinate geometry to three equivalent Bi(1) atoms.
Bi2O3 crystallizes in the hexagonal P6_3mc space group. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 7-coordinate geometry to three equivalent O(2) and four equivalent O(1) atoms. There are two shorter (2.19 Å) and one longer (2.40 Å) Bi(1)-O(2) bond length. There are two shorter (2.55 Å) and two longer (2.79 Å) Bi(1)-O(1) bond lengths. In the second Bi site, Bi(2) is bonded in a 3-coordinate geometry to three equivalent O(1) atoms. All Bi(2)-O(1) bond lengths are 2.15 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Bi(2) and four equivalent Bi(1) atoms. In the second O site, O(2) is bonded in a 3-coordinate geometry to three equivalent Bi(1) atoms.