Materials Data on Mn3CoNi2(PO4)6 by Materials Project

Abstract

Mn3CoNi2(PO4)6 crystallizes in the trigonal R3 space group. The structure is three-dimensional. there are three inequivalent Mn+3.67+ sites. In the first Mn+3.67+ site, Mn+3.67+ is bonded to six O2- atoms to form MnO6 octahedra that share corners with six PO4 tetrahedra and a faceface with one NiO6 octahedra. There is three shorter (1.92 Å) and three longer (2.01 Å) Mn–O bond length. In the second Mn+3.67+ site, Mn+3.67+ is bonded to six O2- atoms to form MnO6 octahedra that share corners with six PO4 tetrahedra. There is three shorter (1.89 Å) and three longer (1.98 Å) Mn–O bond length. In the third Mn+3.67+ site, Mn+3.67+ is bonded to six O2- atoms to form MnO6 octahedra that share corners with six PO4 tetrahedra. There is three shorter (1.93 Å) and three longer (2.01 Å) Mn–O bond length. Co3+ is bonded to six O2- atoms to form CoO6 octahedra that share corners with six PO4 tetrahedra and a faceface with one NiO6 octahedra. There is three shorter (1.93 Å) and three longer (2.05 Å) Co–O bond length. There are two inequivalent Ni2+ sites. In the first Ni2+ site, Ni2+ is bonded to six O2- atoms to form distorted NiO6 octahedra that share corners with six PO4 tetrahedra, a faceface with one MnO6 octahedra, and a faceface with one CoO6 octahedra. There are three shorter (2.11 Å) and three longer (2.16 Å) Ni–O bond lengths. In the second Ni2+ site, Ni2+ is bonded in a 6-coordinate geometry to six O2- atoms. All Ni–O bond lengths are 2.14 Å. 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 CoO6 octahedra, a cornercorner with one NiO6 octahedra, and corners with three MnO6 octahedra. The corner-sharing octahedra tilt angles range from 30–49°. There are a spread of P–O bond distances ranging from 1.52–1.58 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one CoO6 octahedra, a cornercorner with one NiO6 octahedra, and corners with three MnO6 octahedra. The corner-sharing octahedra tilt angles range from 27–49°. There are a spread of P–O bond distances ranging from 1.53–1.57 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 150 degrees geometry to one Mn+3.67+ and one P5+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to one Mn+3.67+, one Ni2+, and one P5+ atom. In the third O2- site, O2- is bonded in a bent 150 degrees geometry to one Co3+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a 3-coordinate geometry to one Mn+3.67+, one Ni2+, and one P5+ atom. In the fifth O2- site, O2- is bonded in a bent 150 degrees geometry to one Mn+3.67+ and one P5+ atom. In the sixth O2- site, O2- is bonded in a 3-coordinate geometry to one Co3+, one Ni2+, and one P5+ atom. In the seventh O2- site, O2- is bonded in a 3-coordinate geometry to one Mn+3.67+, one Ni2+, and one P5+ atom. In the eighth O2- site, O2- is bonded in a bent 150 degrees geometry to one Mn+3.67+ and one P5+ atom.