Materials Data on AlVP2C2N2O9 by Materials Project
VAlCP2NO9CN crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional and consists of four hydrogen cyanide molecules and one VAlCP2NO9 framework. In the VAlCP2NO9 framework, V3+ is bonded in a 6-coordinate geometry to one N3- and five O2- atoms. The V–N bond length is 2.32 Å. There are a spread of V–O bond distances ranging from 1.62–2.06 Å. Al3+ is bonded to four O2- atoms to form AlO4 tetrahedra that share corners with four PO4 tetrahedra. There is three shorter (1.75 Å) and one longer (1.77 Å) Al–O bond length. C4+ is bonded in a single-bond geometry to one N3- atom. The C–N bond length is 1.16 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 two equivalent AlO4 tetrahedra. 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 AlO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.53–1.57 Å. N3- is bonded in a 1-coordinate geometry to one V3+ and one C4+ atom. There are nine inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one V3+ and one P5+ atom. In the second O2- site, O2- is bonded in a bent 150 degrees geometry to one Al3+ and one P5+ atom. In the third O2- site, O2- is bonded in a bent 150 degrees geometry to one V3+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one V3+ and one P5+ atom. In the fifth O2- site, O2- is bonded in a single-bond geometry to one V3+ atom. In the sixth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one V3+ 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 Al3+ and one P5+ atom. In the ninth O2- site, O2- is bonded in a bent 150 degrees geometry to one Al3+ and one P5+ atom.