Materials Data on LiTiP2O7 by Materials Project

Abstract

LiTiP2O7 crystallizes in the monoclinic C2 space group. The structure is three-dimensional. Li1+ is bonded in a 4-coordinate geometry to four O2- atoms. There are two shorter (2.10 Å) and two longer (2.17 Å) Li–O bond lengths. Ti3+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with six equivalent PO4 tetrahedra. There are a spread of Ti–O bond distances ranging from 2.01–2.11 Å. P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with three equivalent TiO6 octahedra and a cornercorner with one PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 23–52°. There are a spread of P–O bond distances ranging from 1.52–1.62 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+, one Ti3+, and one P5+ atom. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to one Li1+, one Ti3+, and one P5+ atom. In the third O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Ti3+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a bent 150 degrees geometry to two equivalent P5+ atoms.