Materials Data on Li2Ti2O5 by Materials Project

Abstract

Li2Ti2O5 crystallizes in the orthorhombic Pbcn space group. The structure is three-dimensional. Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with four equivalent LiO4 tetrahedra, corners with five equivalent TiO4 tetrahedra, and an edgeedge with one LiO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.98–2.09 Å. Ti4+ is bonded to four O2- atoms to form TiO4 tetrahedra that share corners with three equivalent TiO4 tetrahedra and corners with five equivalent LiO4 tetrahedra. There are a spread of Ti–O bond distances ranging from 1.77–1.87 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 150 degrees geometry to two equivalent Ti4+ atoms. In the second O2- site, O2- is bonded to three equivalent Li1+ and one Ti4+ atom to form a mixture of edge and corner-sharing OLi3Ti tetrahedra. In the third O2- site, O2- is bonded in a trigonal planar geometry to one Li1+ and two equivalent Ti4+ atoms.