Materials Data on P2O3 by Materials Project
P2O3 crystallizes in the monoclinic P2_1/m space group. The structure is zero-dimensional and consists of two tetraphosphorus hexaoxide molecules. there are three inequivalent P3+ sites. In the first P3+ site, P3+ is bonded in a distorted trigonal non-coplanar geometry to three O2- atoms. There is one shorter (1.66 Å) and two longer (1.67 Å) P–O bond length. In the second P3+ site, P3+ is bonded in a distorted trigonal non-coplanar geometry to three O2- atoms. All P–O bond lengths are 1.67 Å. In the third P3+ site, P3+ is bonded in a distorted trigonal non-coplanar geometry to three O2- atoms. All P–O bond lengths are 1.67 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 120 degrees geometry to two equivalent P3+ atoms. In the second O2- site, O2- is bonded in a bent 120 degrees geometry to two P3+ atoms. In the third O2- site, O2- is bonded in a bent 120 degrees geometry to two P3+ atoms. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to two P3+ atoms.