Bi2O3 crystallizes in the orthorhombic Pbcn space group. Bi(1) is bonded to two equivalent O(1) and three equivalent O(2) atoms to form a mixture of distorted corner and edge-sharing BiO5 square pyramids. There are two inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Bi(1) atoms to form edge-sharing OBi4 tetrahedra. In the second O site, O(2) is bonded in a trigonal planar geometry to three equivalent Bi(1) atoms.
Bi2O3 crystallizes in the orthorhombic Pbcn space group. Bi(1) is bonded to two equivalent O(1) and three equivalent O(2) atoms to form a mixture of distorted corner and edge-sharing BiO5 square pyramids. There is one shorter (2.30 Å) and one longer (2.39 Å) Bi(1)-O(1) bond length. There are a spread of Bi(1)-O(2) bond distances ranging from 2.11-2.41 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Bi(1) atoms to form edge-sharing OBi4 tetrahedra. In the second O site, O(2) is bonded in a trigonal planar geometry to three equivalent Bi(1) atoms.