Materials Data on Fe3P2H6O11 by Materials Project
Fe3P2H6O11 crystallizes in the orthorhombic Pbcn space group. The structure is three-dimensional. there are two inequivalent Fe2+ sites. In the first Fe2+ site, Fe2+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with four equivalent PO4 tetrahedra and edges with two equivalent FeO6 octahedra. There are a spread of Fe–O bond distances ranging from 2.05–2.38 Å. In the second Fe2+ site, Fe2+ is bonded to six O2- atoms to form FeO6 octahedra that share a cornercorner with one FeO6 octahedra, corners with four equivalent PO4 tetrahedra, and edges with two FeO6 octahedra. The corner-sharing octahedral tilt angles are 70°. There are a spread of Fe–O bond distances ranging from 2.11–2.41 Å. P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with six FeO6 octahedra. The corner-sharing octahedra tilt angles range from 40–53°. There is one shorter (1.55 Å) and three longer (1.56 Å) P–O bond length. There are three inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. In the third H1+ site, H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.04 Å) and one longer (1.50 Å) H–O bond length. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to one Fe2+ and one P5+ atom. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to one Fe2+, one P5+, and one H1+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to two Fe2+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a water-like geometry to two equivalent Fe2+ and two equivalent H1+ atoms. In the fifth O2- site, O2- is bonded in a distorted water-like geometry to two Fe2+ and two H1+ atoms. In the sixth O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Fe2+ and one P5+ atom.