Materials Data on FePH6(NO2)2 by Materials Project

Abstract

FePH6(NO2)2 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Fe3+ is bonded to two N3- and four O2- atoms to form FeN2O4 octahedra that share corners with four equivalent PO4 tetrahedra. There are one shorter (2.18 Å) and one longer (2.19 Å) Fe–N bond lengths. There are three shorter (2.00 Å) and one longer (2.04 Å) Fe–O bond lengths. P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with four equivalent FeN2O4 octahedra. The corner-sharing octahedra tilt angles range from 35–48°. There is three shorter (1.55 Å) and one longer (1.56 Å) P–O bond length. There are two inequivalent N3- sites. In the first N3- site, N3- is bonded in a distorted trigonal non-coplanar geometry to one Fe3+ and three H1+ atoms. There is two shorter (1.02 Å) and one longer (1.03 Å) N–H bond length. In the second N3- site, N3- is bonded in a distorted trigonal non-coplanar geometry to one Fe3+ and three H1+ atoms. There is two shorter (1.02 Å) and one longer (1.03 Å) N–H bond length. There are four inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 150 degrees geometry to one Fe3+ and one P5+ atom. In the second O2- site, O2- is bonded in a bent 150 degrees geometry to one Fe3+ and one P5+ atom. In the third O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Fe3+ and one P5+ atom.