Materials Data on CoPO4 by Materials Project

Abstract

CoPO4 crystallizes in the orthorhombic Pna2_1 space group. The structure is three-dimensional. Co3+ is bonded to four O2- atoms to form CoO4 tetrahedra that share corners with four equivalent PO4 tetrahedra. There is one shorter (1.85 Å) and three longer (1.86 Å) Co–O bond length. P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with four equivalent CoO4 tetrahedra. There is one shorter (1.54 Å) and three longer (1.55 Å) P–O bond length. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 150 degrees geometry to one Co3+ and one P5+ atom. In the second O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Co3+ and one P5+ atom. In the third O2- site, O2- is bonded in a bent 120 degrees geometry to one Co3+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Co3+ and one P5+ atom.