DOI: 10.17188/1725494
title: Materials Data on Fe3Ag7(P2O7)4 by Materials Project

description: Fe3Ag7(P2O7)4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are three inequivalent Fe3+ sites. In the first Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six PO4 tetrahedra. There are a spread of Fe–O bond distances ranging from 2.01–2.13 Å. In the second Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six PO4 tetrahedra. There are a spread of Fe–O bond distances ranging from 2.02–2.06 Å. In the third Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six PO4 tetrahedra. There are a spread of Fe–O bond distances ranging from 2.02–2.06 Å. There are seven inequivalent Ag1+ sites. In the first Ag1+ site, Ag1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Ag–O bond distances ranging from 2.35–3.04 Å. In the second Ag1+ site, Ag1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Ag–O bond distances ranging from 2.27–2.81 Å. In the third Ag1+ site, Ag1+ is bonded in a 1-coordinate geometry to nine O2- atoms. There are a spread of Ag–O bond distances ranging from 2.37–3.18 Å. In the fourth Ag1+ site, Ag1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ag–O bond distances ranging from 2.42–3.03 Å. In the fifth Ag1+ site, Ag1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Ag–O bond distances ranging from 2.37–3.08 Å. In the sixth Ag1+ site, Ag1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Ag–O bond distances ranging from 2.52–2.91 Å. In the seventh Ag1+ site, Ag1+ is bonded in a 2-coordinate geometry to two O2- atoms. There are one shorter (2.27 Å) and one longer (2.29 Å) Ag–O bond lengths. There are eight inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent FeO6 octahedra and a cornercorner with one PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 38–54°. There are a spread of P–O bond distances ranging from 1.53–1.65 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent FeO6 octahedra and a cornercorner with one PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 39–54°. There are a spread of P–O bond distances ranging from 1.51–1.65 Å. In the third P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two FeO6 octahedra and a cornercorner with one PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 47–51°. There are a spread of P–O bond distances ranging from 1.53–1.64 Å. In the fourth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two FeO6 octahedra and a cornercorner with one PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 45–54°. There are a spread of P–O bond distances ranging from 1.52–1.64 Å. In the fifth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two FeO6 octahedra and a cornercorner with one PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 37–51°. There are a spread of P–O bond distances ranging from 1.51–1.63 Å. In the sixth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two FeO6 octahedra and a cornercorner with one PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 37–50°. There are a spread of P–O bond distances ranging from 1.53–1.63 Å. In the seventh P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with three FeO6 octahedra and a cornercorner with one PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 41–48°. There is three shorter (1.54 Å) and one longer (1.61 Å) P–O bond length. In the eighth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with three FeO6 octahedra and a cornercorner with one PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 41–46°. There are a spread of P–O bond distances ranging from 1.53–1.62 Å. There are twenty-eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to one Fe3+, two Ag1+, and one P5+ atom. In the second O2- site, O2- is bonded in a 2-coordinate geometry to one Fe3+, one Ag1+, and one P5+ atom. In the third O2- site, O2- is bonded in a 2-coordinate geometry to one Fe3+, two equivalent Ag1+, and one P5+ atom. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to one Fe3+, one Ag1+, and one P5+ atom. In the fifth O2- site, O2- is bonded in a 1-coordinate geometry to two Ag1+ and one P5+ atom. In the sixth O2- site, O2- is bonded in a 1-coordinate geometry to three Ag1+ and one P5+ atom. In the seventh O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two P5+ atoms. In the eighth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two P5+ atoms. In the ninth O2- site, O2- is bonded in a 3-coordinate geometry to one Fe3+, one Ag1+, and one P5+ atom. In the tenth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Fe3+, one Ag1+, and one P5+ atom. In the eleventh O2- site, O2- is bonded in a 2-coordinate geometry to one Fe3+, two Ag1+, and one P5+ atom. In the twelfth O2- site, O2- is bonded in a 2-coordinate geometry to one Fe3+, two Ag1+, and one P5+ atom. In the thirteenth O2- site, O2- is bonded in a 3-coordinate geometry to one Fe3+, one Ag1+, and one P5+ atom. In the fourteenth O2- site, O2- is bonded in a 2-coordinate geometry to one Fe3+, one Ag1+, and one P5+ atom. In the fifteenth O2- site, O2- is bonded in a 1-coordinate geometry to three Ag1+ and one P5+ atom. In the sixteenth O2- site, O2- is bonded in a distorted single-bond geometry to two Ag1+ and one P5+ atom. In the seventeenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Fe3+, one Ag1+, and one P5+ atom. In the eighteenth O2- site, O2- is bonded in a 1-coordinate geometry to one Fe3+, two Ag1+, and one P5+ atom. In the nineteenth O2- site, O2- is bonded in a 1-coordinate geometry to one Fe3+, one Ag1+, and one P5+ atom. In the twentieth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Fe3+, one Ag1+, and one P5+ atom. In the twenty-first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two Ag1+ and two P5+ atoms. In the twenty-second O2- site, O2- is bonded in a bent 120 degrees geometry to two Ag1+ and two P5+ atoms. In the twenty-third O2- site, O2- is bonded in a 2-coordinate geometry to one Fe3+, two Ag1+, and one P5+ atom. In the twenty-fourth O2- site, O2- is bonded in a 2-coordinate geometry to one Fe3+, two Ag1+, and one P5+ atom. In the twenty-fifth O2- site, O2- is bonded in a distorted single-bond geometry to three Ag1+ and one P5+ atom. In the twenty-sixth O2- site, O2- is bonded in a distorted single-bond geometry to three Ag1+ and one P5+ atom. In the twenty-seventh O2- site, O2- is bonded in a 2-coordinate geometry to one Fe3+, one Ag1+, and one P5+ atom. In the twenty-eighth O2- site, O2- is bonded in a 1-coordinate geometry to one Fe3+, two Ag1+, and one P5+ atom.