Materials Data on FeP3(HO)6 by Materials Project
FeP3(HO)6 crystallizes in the trigonal R-3 space group. The structure is one-dimensional and consists of three FeP3(HO)6 ribbons oriented in the (0, 0, 1) direction. there are two inequivalent Fe3+ sites. In the first Fe3+ site, Fe3+ is bonded to six equivalent O2- atoms to form FeO6 octahedra that share corners with six equivalent PH2O2 tetrahedra. All Fe–O bond lengths are 2.04 Å. In the second Fe3+ site, Fe3+ is bonded to six equivalent O2- atoms to form FeO6 octahedra that share corners with six equivalent PH2O2 tetrahedra. All Fe–O bond lengths are 2.03 Å. P+2.33+ is bonded to two H+0.33+ and two O2- atoms to form distorted PH2O2 tetrahedra that share corners with two FeO6 octahedra. The corner-sharing octahedra tilt angles range from 41–48°. There is one shorter (1.41 Å) and one longer (1.42 Å) P–H bond length. Both P–O bond lengths are 1.53 Å. There are two inequivalent H+0.33+ sites. In the first H+0.33+ site, H+0.33+ is bonded in a single-bond geometry to one P+2.33+ atom. In the second H+0.33+ site, H+0.33+ is bonded in a single-bond geometry to one P+2.33+ atom. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Fe3+ and one P+2.33+ atom. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Fe3+ and one P+2.33+ atom.