Materials Data on LiMgPO4 by Materials Project

Abstract

LiMgPO4 is Spinel-derived structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share corners with four equivalent MgO6 octahedra, corners with two equivalent PO4 tetrahedra, edges with two equivalent LiO6 octahedra, edges with two equivalent MgO6 octahedra, and edges with two equivalent PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 58–67°. There are a spread of Li–O bond distances ranging from 2.12–2.19 Å. Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with four equivalent LiO6 octahedra, corners with four equivalent MgO6 octahedra, corners with four equivalent PO4 tetrahedra, edges with two equivalent LiO6 octahedra, and an edgeedge with one PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 51–67°. There are a spread of Mg–O bond distances ranging from 2.07–2.19 Å. P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent LiO6 octahedra, corners with four equivalent MgO6 octahedra, an edgeedge with one MgO6 octahedra, and edges with two equivalent LiO6 octahedra. The corner-sharing octahedra tilt angles range from 50–58°. There are a spread of P–O bond distances ranging from 1.54–1.57 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a rectangular see-saw-like geometry to one Li1+, two equivalent Mg2+, and one P5+ atom. In the second O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to two equivalent Li1+, one Mg2+, and one P5+ atom. In the third O2- site, O2- is bonded in a rectangular see-saw-like geometry to two equivalent Li1+, one Mg2+, and one P5+ atom.