Materials Data on LiTiSe2O by Materials Project

Abstract

Li2O2(TiSe2)2 is Hydrophilite-derived structured and crystallizes in the trigonal P3m1 space group. The structure is two-dimensional and consists of three Li2O2 sheets oriented in the (0, 0, 1) direction and three TiSe2 sheets oriented in the (0, 0, 1) direction. In each Li2O2 sheet, Li1+ is bonded in a trigonal planar geometry to three equivalent O2- atoms. All Li–O bond lengths are 2.01 Å. O2- is bonded in a trigonal planar geometry to three equivalent Li1+ atoms. In each TiSe2 sheet, Ti4+ is bonded to six Se+1.50- atoms to form edge-sharing TiSe6 octahedra. There are three shorter (2.54 Å) and three longer (2.56 Å) Ti–Se bond lengths. There are two inequivalent Se+1.50- sites. In the first Se+1.50- site, Se+1.50- is bonded in a 3-coordinate geometry to three equivalent Ti4+ atoms. In the second Se+1.50- site, Se+1.50- is bonded in a 3-coordinate geometry to three equivalent Ti4+ atoms.