Materials Data on Zn(PO2)2 by Materials Project

Abstract

Zn(PO2)2 crystallizes in the orthorhombic Pmma space group. The structure is two-dimensional and consists of one Zn(PO2)2 sheet oriented in the (0, 0, 1) direction. Zn2+ is bonded to six O2- atoms to form edge-sharing ZnO6 octahedra. There are two shorter (1.98 Å) and four longer (2.26 Å) Zn–O bond lengths. There are two inequivalent P3+ sites. In the first P3+ site, P3+ is bonded in a water-like geometry to two equivalent O2- atoms. Both P–O bond lengths are 1.54 Å. In the second P3+ site, P3+ is bonded in a bent 120 degrees geometry to two equivalent O2- atoms. Both P–O bond lengths are 1.53 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Zn2+ and one P3+ atom. In the second O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Zn2+ and one P3+ atom.