Materials Data on PH4SNO2 by Materials Project
(NH4)2P3NH4S3O6 crystallizes in the orthorhombic Pnma space group. The structure is zero-dimensional and consists of eight ammonium molecules and four P3NH4S3O6 clusters. In each P3NH4S3O6 cluster, there are two inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to one S2- and three O2- atoms to form distorted corner-sharing PSO3 tetrahedra. The P–S bond length is 1.96 Å. There are a spread of P–O bond distances ranging from 1.51–1.64 Å. In the second P5+ site, P5+ is bonded to one S2- and three O2- atoms to form distorted corner-sharing PSO3 tetrahedra. The P–S bond length is 1.97 Å. There is one shorter (1.51 Å) and two longer (1.63 Å) P–O bond length. N3- is bonded in a tetrahedral geometry to four H1+ atoms. There are a spread of N–H bond distances ranging from 1.03–1.06 Å. There are three inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one N3- and one O2- atom. The H–O bond length is 1.69 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a distorted single-bond geometry to one P5+ atom. In the second S2- site, S2- is bonded in a single-bond geometry to one P5+ atom. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two P5+ atoms. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one P5+ and one H1+ atom. In the third O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two equivalent P5+ atoms. In the fourth O2- site, O2- is bonded in a single-bond geometry to one P5+ atom.