DOI: 10.17188/1286101
title: Materials Data on MgVFeMo3O14 by Materials Project

description: MgVMo3FeO14 crystallizes in the monoclinic P2_1 space group. The structure is three-dimensional. Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share a cornercorner with one VO4 tetrahedra, corners with five MoO4 tetrahedra, and an edgeedge with one FeO6 octahedra. There are a spread of Mg–O bond distances ranging from 2.04–2.14 Å. V5+ is bonded to four O2- atoms to form VO4 tetrahedra that share a cornercorner with one MgO6 octahedra, corners with two equivalent FeO6 octahedra, and a cornercorner with one MoO4 tetrahedra. The corner-sharing octahedra tilt angles range from 34–57°. There are a spread of V–O bond distances ranging from 1.64–1.88 Å. There are three inequivalent Mo6+ sites. In the first Mo6+ site, Mo6+ is bonded to four O2- atoms to form MoO4 tetrahedra that share a cornercorner with one FeO6 octahedra, corners with two equivalent MgO6 octahedra, and a cornercorner with one MoO4 tetrahedra. The corner-sharing octahedra tilt angles range from 8–26°. There are a spread of Mo–O bond distances ranging from 1.75–1.89 Å. In the second Mo6+ site, Mo6+ is bonded to four O2- atoms to form MoO4 tetrahedra that share a cornercorner with one FeO6 octahedra, corners with two equivalent MgO6 octahedra, and a cornercorner with one MoO4 tetrahedra. The corner-sharing octahedra tilt angles range from 39–59°. There are a spread of Mo–O bond distances ranging from 1.72–1.90 Å. In the third Mo6+ site, Mo6+ is bonded to four O2- atoms to form MoO4 tetrahedra that share a cornercorner with one MgO6 octahedra, corners with two equivalent FeO6 octahedra, and a cornercorner with one VO4 tetrahedra. The corner-sharing octahedra tilt angles range from 4–28°. There are a spread of Mo–O bond distances ranging from 1.78–1.86 Å. Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with two equivalent VO4 tetrahedra, corners with four MoO4 tetrahedra, and an edgeedge with one MgO6 octahedra. There are a spread of Fe–O bond distances ranging from 1.96–2.09 Å. There are fourteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a linear geometry to one Mo6+ and one Fe3+ atom. In the second O2- site, O2- is bonded in a linear geometry to one Mo6+ and one Fe3+ atom. In the third O2- site, O2- is bonded in a bent 150 degrees geometry to two Mo6+ atoms. In the fourth O2- site, O2- is bonded in a linear geometry to one Mg2+ and one Mo6+ atom. In the fifth O2- site, O2- is bonded in a single-bond geometry to one V5+ atom. In the sixth O2- site, O2- is bonded in a linear geometry to one Mg2+ and one Mo6+ atom. In the seventh O2- site, O2- is bonded in a bent 150 degrees geometry to one V5+ and one Fe3+ atom. In the eighth O2- site, O2- is bonded in a bent 150 degrees geometry to one Mo6+ and one Fe3+ atom. In the ninth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Mg2+, one V5+, and one Fe3+ atom. In the tenth O2- site, O2- is bonded in a single-bond geometry to one Mo6+ atom. In the eleventh O2- site, O2- is bonded in a bent 150 degrees geometry to one Mg2+ and one Mo6+ atom. In the twelfth O2- site, O2- is bonded in a bent 150 degrees geometry to one Mg2+ and one Mo6+ atom. In the thirteenth O2- site, O2- is bonded in a bent 150 degrees geometry to one V5+ and one Mo6+ atom. In the fourteenth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Mg2+, one Mo6+, and one Fe3+ atom.