Materials Data on MnV4FeO12 by Materials Project
V4MnFeO12 crystallizes in the monoclinic C2 space group. The structure is three-dimensional. there are two inequivalent V5+ sites. In the first V5+ site, V5+ is bonded to four O2- atoms to form VO4 tetrahedra that share a cornercorner with one MnO6 octahedra, corners with two equivalent FeO6 octahedra, and corners with two equivalent VO4 tetrahedra. The corner-sharing octahedra tilt angles range from 31–59°. There are a spread of V–O bond distances ranging from 1.68–1.80 Å. In the second V5+ site, V5+ is bonded to four O2- atoms to form VO4 tetrahedra that share a cornercorner with one FeO6 octahedra, corners with two equivalent MnO6 octahedra, and corners with two equivalent VO4 tetrahedra. The corner-sharing octahedra tilt angles range from 33–57°. There are a spread of V–O bond distances ranging from 1.68–1.80 Å. Mn2+ is bonded to six O2- atoms to form MnO6 octahedra that share corners with six VO4 tetrahedra and edges with two equivalent FeO6 octahedra. There are a spread of Mn–O bond distances ranging from 2.14–2.26 Å. Fe2+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six VO4 tetrahedra and edges with two equivalent MnO6 octahedra. There are a spread of Fe–O bond distances ranging from 2.11–2.21 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to one V5+, one Mn2+, and one Fe2+ atom. In the second O2- site, O2- is bonded in a bent 150 degrees geometry to one V5+ and one Fe2+ atom. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to one V5+, one Mn2+, and one Fe2+ atom. In the fourth O2- site, O2- is bonded in a bent 150 degrees geometry to two V5+ atoms. In the fifth O2- site, O2- is bonded in a bent 150 degrees geometry to two V5+ atoms. In the sixth O2- site, O2- is bonded in a bent 150 degrees geometry to one V5+ and one Mn2+ atom.