Title: Materials Data on Mn2VFe3(PO4)6 by Materials Project

Abstract

VMn2Fe3(PO4)6 crystallizes in the trigonal R3 space group. The structure is three-dimensional. V5+ is bonded to six O2- atoms to form VO6 octahedra that share corners with six PO4 tetrahedra. There is three shorter (1.84 Å) and three longer (1.99 Å) V–O bond length. There are two inequivalent Mn2+ sites. In the first Mn2+ site, Mn2+ is bonded in a distorted hexagonal planar geometry to six O2- atoms. There are three shorter (2.23 Å) and three longer (2.29 Å) Mn–O bond lengths. In the second Mn2+ site, Mn2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are three shorter (2.22 Å) and three longer (2.23 Å) Mn–O bond lengths. 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 three shorter (1.96 Å) and three longer (2.14 Å) Fe–O bond lengths. 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 three shorter (1.93 Å) and three longer (2.09 Å) Fe–O bond lengths. In the third Fe3+ site, Fe3+ is bondedmore » to six O2- atoms to form FeO6 octahedra that share corners with six PO4 tetrahedra. There are three shorter (1.94 Å) and three longer (2.06 Å) Fe–O bond lengths. There are two inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one VO6 octahedra and corners with three FeO6 octahedra. The corner-sharing octahedra tilt angles range from 22–52°. There are a spread of P–O bond distances ranging from 1.51–1.60 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one VO6 octahedra and corners with three FeO6 octahedra. The corner-sharing octahedra tilt angles range from 28–46°. There are a spread of P–O bond distances ranging from 1.52–1.59 Å. There are eight 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 3-coordinate geometry to one Mn2+, one Fe3+, and one P5+ atom. In the third O2- site, O2- is bonded in a bent 150 degrees geometry to one V5+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a 3-coordinate geometry to one Mn2+, one Fe3+, and one P5+ atom. In the fifth O2- site, O2- is bonded in a bent 150 degrees geometry to one Fe3+ and one P5+ atom. In the sixth O2- site, O2- is bonded in a 3-coordinate geometry to one V5+, one Mn2+, and one P5+ atom. In the seventh O2- site, O2- is bonded in a 3-coordinate geometry to one Mn2+, one Fe3+, and one P5+ atom. In the eighth O2- site, O2- is bonded in a bent 150 degrees geometry to one Fe3+ and one P5+ atom.« less

Publication Date:

2020-05-01

Other Number(s):

mp-767701

DOE Contract Number:  

AC02-05CH11231

Research Org.:

LBNL Materials Project; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Org.:

USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

Collaborations:

The Materials Project; MIT; UC Berkeley; Duke; U Louvain

Subject:

36 MATERIALS SCIENCE; Fe-Mn-O-P-V; Mn2VFe3(PO4)6; crystal structure

OSTI Identifier:

1297810

DOI:

https://doi.org/10.17188/1297810