Materials Data on MnAl2Sb2(PO4)6 by Materials Project

Abstract

MnAl2Sb2(PO4)6 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Mn2+ is bonded in a distorted hexagonal planar geometry to six O2- atoms. There are a spread of Mn–O bond distances ranging from 2.28–2.33 Å. Al3+ is bonded to six O2- atoms to form AlO6 octahedra that share corners with six PO4 tetrahedra. There are a spread of Al–O bond distances ranging from 1.86–1.99 Å. Sb5+ is bonded to six O2- atoms to form SbO6 octahedra that share corners with six PO4 tetrahedra. There are a spread of Sb–O bond distances ranging from 1.95–1.97 Å. There are three 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 AlO6 octahedra and corners with three equivalent SbO6 octahedra. The corner-sharing octahedra tilt angles range from 24–38°. There are a spread of P–O bond distances ranging from 1.51–1.56 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent AlO6 octahedra and corners with two equivalent SbO6 octahedra. The corner-sharing octahedra tilt angles range from 23–39°. There are a spread of P–O bond distances ranging from 1.51–1.56 Å. In the third P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one SbO6 octahedra and corners with three equivalent AlO6 octahedra. The corner-sharing octahedra tilt angles range from 22–42°. There are a spread of P–O bond distances ranging from 1.51–1.57 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to one Mn2+, one Al3+, and one P5+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to one Mn2+, one Al3+, and one P5+ atom. In the third O2- site, O2- is bonded in a bent 150 degrees geometry to one Sb5+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a bent 150 degrees geometry to one Sb5+ and one P5+ atom. In the fifth O2- site, O2- is bonded in a bent 150 degrees geometry to one Sb5+ and one P5+ atom. In the sixth O2- site, O2- is bonded in a bent 150 degrees geometry to one Sb5+ and one P5+ atom. In the seventh O2- site, O2- is bonded in a bent 150 degrees geometry to one Al3+ and one P5+ atom. In the eighth O2- site, O2- is bonded in a bent 150 degrees geometry to one Sb5+ and one P5+ atom. In the ninth O2- site, O2- is bonded in a bent 150 degrees geometry to one Sb5+ and one P5+ atom. In the tenth O2- site, O2- is bonded in a 3-coordinate geometry to one Mn2+, one Al3+, and one P5+ atom. In the eleventh O2- site, O2- is bonded in a bent 150 degrees geometry to one Al3+ and one P5+ atom. In the twelfth O2- site, O2- is bonded in a bent 150 degrees geometry to one Al3+ and one P5+ atom.