Ti4O5 crystallizes in the tetragonal I4/m space group. Ti(1) is bonded to one O(2) and five equivalent O(1) atoms to form a mixture of corner and edge-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 0-12°. There are two inequivalent O sites. In the first O site, O(1) is bonded to five equivalent Ti(1) atoms to form a mixture of corner and edge-sharing OTi5 square pyramids. In the second O site, O(2) is bonded in a square co-planar geometry to four equivalent Ti(1) atoms.
Ti4O5 crystallizes in the tetragonal I4/m space group. Ti(1) is bonded to one O(2) and five equivalent O(1) atoms to form a mixture of corner and edge-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 0-12°. The Ti(1)-O(2) bond length is 2.01 Å. There are a spread of Ti(1)-O(1) bond distances ranging from 2.08-2.14 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded to five equivalent Ti(1) atoms to form a mixture of corner and edge-sharing OTi5 square pyramids. In the second O site, O(2) is bonded in a square co-planar geometry to four equivalent Ti(1) atoms.