Materials Data on Li2Cu(PO3)4 by Materials Project

Abstract

Li2Cu(PO3)4 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Li1+ is bonded to five O2- atoms to form distorted LiO5 trigonal bipyramids that share corners with five PO4 tetrahedra, an edgeedge with one LiO5 trigonal bipyramid, and a faceface with one CuO6 octahedra. There are a spread of Li–O bond distances ranging from 2.08–2.59 Å. Cu2+ is bonded to six O2- atoms to form distorted CuO6 octahedra that share corners with six PO4 tetrahedra and faces with two equivalent LiO5 trigonal bipyramids. There are a spread of Cu–O bond distances ranging from 1.95–2.64 Å. There are two inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one CuO6 octahedra, corners with two PO4 tetrahedra, and corners with three equivalent LiO5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 55°. There are a spread of P–O bond distances ranging from 1.49–1.61 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent CuO6 octahedra, corners with two PO4 tetrahedra, and corners with two equivalent LiO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 44–65°. There are a spread of P–O bond distances ranging from 1.49–1.62 Å. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to one Li1+, one Cu2+, and one P5+ atom. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two P5+ atoms. In the third O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+, one Cu2+, and one P5+ atom. In the fourth O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Li1+ and one P5+ atom. In the fifth O2- site, O2- is bonded in a bent 120 degrees geometry to two equivalent P5+ atoms. In the sixth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two equivalent P5+ atoms. In the seventh O2- site, O2- is bonded in a 2-coordinate geometry to one Li1+, one Cu2+, and one P5+ atom.