Materials Data on Cu2PO5 by Materials Project

Abstract

Cu2PO5 crystallizes in the orthorhombic Pnnm space group. The structure is three-dimensional. there are two inequivalent Cu+2.50+ sites. In the first Cu+2.50+ site, Cu+2.50+ is bonded to six O2- atoms to form distorted CuO6 octahedra that share corners with four equivalent PO4 tetrahedra, corners with four equivalent CuO5 trigonal bipyramids, and edges with two equivalent CuO6 octahedra. There are a spread of Cu–O bond distances ranging from 1.87–2.46 Å. In the second Cu+2.50+ site, Cu+2.50+ is bonded to five O2- atoms to form CuO5 trigonal bipyramids that share corners with four equivalent CuO6 octahedra, corners with four equivalent PO4 tetrahedra, and an edgeedge with one CuO5 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 55–65°. There are a spread of Cu–O bond distances ranging from 1.83–2.06 Å. P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with four equivalent CuO6 octahedra and corners with four equivalent CuO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 54–67°. There are a spread of P–O bond distances ranging from 1.54–1.59 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a trigonal planar geometry to three Cu+2.50+ atoms. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Cu+2.50+ and one P5+ atom. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Cu+2.50+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a 3-coordinate geometry to two Cu+2.50+ and one P5+ atom.