Materials Data on Li2Te2O5 by Materials Project
Li2Te2O5 crystallizes in the orthorhombic Pccn space group. The structure is three-dimensional. there are two inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded to four O2- atoms to form a mixture of corner and edge-sharing LiO4 trigonal pyramids. There are a spread of Li–O bond distances ranging from 1.98–2.15 Å. In the second Li1+ site, Li1+ is bonded to four O2- atoms to form a mixture of corner and edge-sharing LiO4 tetrahedra. There is one shorter (1.97 Å) and three longer (1.99 Å) Li–O bond length. There are two inequivalent Te4+ sites. In the first Te4+ site, Te4+ is bonded in a distorted see-saw-like geometry to four O2- atoms. There are a spread of Te–O bond distances ranging from 1.88–2.31 Å. In the second Te4+ site, Te4+ is bonded in a distorted rectangular see-saw-like geometry to four O2- atoms. There are a spread of Te–O bond distances ranging from 1.88–2.44 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a rectangular see-saw-like geometry to three Li1+ and one Te4+ atom. In the second O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Li1+ and two equivalent Te4+ atoms. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to one Li1+ and two equivalent Te4+ atoms. In the fourth O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to three Li1+ and one Te4+ atom. In the fifth O2- site, O2- is bonded in a bent 150 degrees geometry to two Te4+ atoms.