Materials Data on Cu5(PO6)2 by Materials Project
Cu5(PO6)2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are three inequivalent Cu+2.80+ sites. In the first Cu+2.80+ site, Cu+2.80+ is bonded in a square co-planar geometry to four O2- atoms. There is two shorter (1.87 Å) and two longer (1.89 Å) Cu–O bond length. In the second Cu+2.80+ site, Cu+2.80+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Cu–O bond distances ranging from 1.87–1.94 Å. In the third Cu+2.80+ site, Cu+2.80+ is bonded to six O2- atoms to form distorted CuO6 octahedra that share corners with four equivalent PO4 tetrahedra. There are a spread of Cu–O bond distances ranging from 1.91–2.45 Å. P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with four equivalent CuO6 octahedra. The corner-sharing octahedra tilt angles range from 52–67°. There are a spread of P–O bond distances ranging from 1.51–1.60 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to three Cu+2.80+ atoms. In the second O2- site, O2- is bonded in a 2-coordinate geometry to two Cu+2.80+ and one P5+ atom. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to two Cu+2.80+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to one Cu+2.80+ and one P5+ atom. In the fifth O2- site, O2- is bonded in a 2-coordinate geometry to one Cu+2.80+ and one P5+ atom. In the sixth O2- site, O2- is bonded in a trigonal non-coplanar geometry to three Cu+2.80+ atoms.