Li2Ti2O5 crystallizes in the orthorhombic Pbcn space group. Li(1) is bonded to one O(3) and three equivalent O(2) atoms to form LiO4 tetrahedra that share corners with four equivalent Li(1)O4 tetrahedra, corners with five equivalent Ti(1)O4 tetrahedra, and  an edgeedge with one Li(1)O4 tetrahedra. Ti(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form TiO4 tetrahedra that share corners with three equivalent Ti(1)O4 tetrahedra and corners with five equivalent Li(1)O4 tetrahedra. There are three inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to two equivalent Ti(1) atoms. In the second O site, O(2) is bonded to three equivalent Li(1) and one Ti(1) atom to form a mixture of edge and corner-sharing OLi3Ti tetrahedra. In the third O site, O(3) is bonded in a trigonal planar geometry to one Li(1) and two equivalent Ti(1) atoms.
Li2Ti2O5 crystallizes in the orthorhombic Pbcn space group. Li(1) is bonded to one O(3) and three equivalent O(2) atoms to form LiO4 tetrahedra that share corners with four equivalent Li(1)O4 tetrahedra, corners with five equivalent Ti(1)O4 tetrahedra, and  an edgeedge with one Li(1)O4 tetrahedra. The Li(1)-O(3) bond length is 2.01 Å. There are a spread of Li(1)-O(2) bond distances ranging from 1.98-2.09 Å. Ti(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form TiO4 tetrahedra that share corners with three equivalent Ti(1)O4 tetrahedra and corners with five equivalent Li(1)O4 tetrahedra. The Ti(1)-O(1) bond length is 1.83 Å. The Ti(1)-O(2) bond length is 1.77 Å. Both Ti(1)-O(3) bond lengths are 1.87 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to two equivalent Ti(1) atoms. In the second O site, O(2) is bonded to three equivalent Li(1) and one Ti(1) atom to form a mixture of edge and corner-sharing OLi3Ti tetrahedra. In the third O site, O(3) is bonded in a trigonal planar geometry to one Li(1) and two equivalent Ti(1) atoms.