Materials Data on Li(TiTe2)2 by Materials Project
Li(TiTe2)2 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. Li1+ is bonded to six Te2- atoms to form LiTe6 octahedra that share corners with twelve equivalent TiTe6 octahedra, edges with two equivalent LiTe6 octahedra, and faces with two equivalent TiTe6 octahedra. The corner-sharing octahedra tilt angles range from 46–49°. There are two shorter (2.88 Å) and four longer (2.91 Å) Li–Te bond lengths. Ti+3.50+ is bonded to six Te2- atoms to form TiTe6 octahedra that share corners with six equivalent LiTe6 octahedra, edges with six equivalent TiTe6 octahedra, and a faceface with one LiTe6 octahedra. The corner-sharing octahedra tilt angles range from 46–49°. There are a spread of Ti–Te bond distances ranging from 2.78–2.82 Å. There are two inequivalent Te2- sites. In the first Te2- site, Te2- is bonded in a rectangular see-saw-like geometry to one Li1+ and three equivalent Ti+3.50+ atoms. In the second Te2- site, Te2- is bonded to two equivalent Li1+ and three equivalent Ti+3.50+ atoms to form a mixture of distorted edge and corner-sharing TeLi2Ti3 trigonal bipyramids.