Materials Data on Al2P2H6NO11 by Materials Project

Abstract

(AlPHO5)4(NH4)2O2 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is three-dimensional and consists of four ammonium molecules, four water molecules, and one AlPHO5 framework. In the AlPHO5 framework, there are two inequivalent Al3+ sites. In the first Al3+ site, Al3+ is bonded to six O2- atoms to form AlO6 octahedra that share corners with four PO4 tetrahedra and a cornercorner with one AlO5 trigonal bipyramid. There are a spread of Al–O bond distances ranging from 1.86–1.93 Å. In the second Al3+ site, Al3+ is bonded to five O2- atoms to form AlO5 trigonal bipyramids that share a cornercorner with one AlO6 octahedra and corners with four PO4 tetrahedra. The corner-sharing octahedral tilt angles are 49°. There are a spread of Al–O bond distances ranging from 1.81–1.90 Å. There are two inequivalent P+4.50+ sites. In the first P+4.50+ site, P+4.50+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent AlO6 octahedra and corners with two equivalent AlO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 40–48°. There are a spread of P–O bond distances ranging from 1.53–1.56 Å. In the second P+4.50+ site, P+4.50+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent AlO6 octahedra and corners with two equivalent AlO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 24–52°. There are a spread of P–O bond distances ranging from 1.53–1.56 Å. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to two O2- atoms. There is one shorter (1.00 Å) and one longer (1.68 Å) H–O bond length. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.97 Å. There are ten inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 150 degrees geometry to one Al3+ and one P+4.50+ atom. In the second O2- site, O2- is bonded in a bent 150 degrees geometry to one Al3+ and one P+4.50+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one Al3+ and one H1+ atom. In the fourth O2- site, O2- is bonded in a 3-coordinate geometry to one Al3+, one P+4.50+, and one H1+ atom. In the fifth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Al3+ and one P+4.50+ atom. In the sixth O2- site, O2- is bonded in a distorted single-bond geometry to two Al3+ and one H1+ atom. In the seventh O2- site, O2- is bonded in a bent 150 degrees geometry to one Al3+ and one P+4.50+ atom. In the eighth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Al3+ and one P+4.50+ atom. In the ninth O2- site, O2- is bonded in a bent 120 degrees geometry to one Al3+ and one P+4.50+ atom. In the tenth O2- site, O2- is bonded in a bent 150 degrees geometry to one Al3+ and one P+4.50+ atom.