Materials Data on VBP2NO9 by Materials Project
(VBP2O9)2N2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional and consists of four ammonia molecules and one VBP2O9 framework. In the VBP2O9 framework, V4+ is bonded to six O2- atoms to form VO6 octahedra that share a cornercorner with one BO4 tetrahedra and corners with five PO4 tetrahedra. There are a spread of V–O bond distances ranging from 1.74–1.99 Å. B3+ is bonded to four O2- atoms to form BO4 tetrahedra that share a cornercorner with one VO6 octahedra and corners with three PO4 tetrahedra. The corner-sharing octahedral tilt angles are 51°. There are a spread of B–O bond distances ranging from 1.45–1.50 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 corners with three equivalent VO6 octahedra and a cornercorner with one BO4 tetrahedra. The corner-sharing octahedra tilt angles range from 30–45°. There are a spread of P–O bond distances ranging from 1.52–1.57 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent VO6 octahedra and corners with two equivalent BO4 tetrahedra. The corner-sharing octahedra tilt angles range from 36–54°. There is one shorter (1.54 Å) and three longer (1.55 Å) P–O bond length. There are nine inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one V4+ and one P5+ atom. In the second O2- site, O2- is bonded in a bent 120 degrees geometry to one V4+ and one P5+ atom. In the third O2- site, O2- is bonded in a bent 120 degrees geometry to one B3+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to one B3+ and one P5+ atom. In the fifth O2- site, O2- is bonded in a bent 150 degrees geometry to one V4+ and one P5+ atom. In the sixth O2- site, O2- is bonded in a bent 120 degrees geometry to one V4+ and one B3+ atom. In the seventh O2- site, O2- is bonded in a bent 150 degrees geometry to one V4+ and one P5+ atom. In the eighth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one B3+ and one P5+ atom. In the ninth O2- site, O2- is bonded in a bent 150 degrees geometry to one V4+ and one P5+ atom.