Materials Data on Zn3P6H6O19 by Materials Project
(ZnP2(HO3)2)6O2 crystallizes in the trigonal R-3 space group. The structure is three-dimensional and consists of six water molecules and one ZnP2(HO3)2 framework. In the ZnP2(HO3)2 framework, Zn2+ is bonded to six O2- atoms to form ZnO6 octahedra that share corners with six PHO3 tetrahedra and edges with two equivalent ZnO6 octahedra. There are a spread of Zn–O bond distances ranging from 2.02–2.20 Å. There are two inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to one H+0.33+ and three O2- atoms to form distorted PHO3 tetrahedra that share corners with three equivalent ZnO6 octahedra. The corner-sharing octahedra tilt angles range from 43–53°. The P–H bond length is 1.41 Å. There is one shorter (1.53 Å) and two longer (1.55 Å) P–O bond length. In the second P5+ site, P5+ is bonded to one H+0.33+ and three O2- atoms to form distorted PHO3 tetrahedra that share corners with three equivalent ZnO6 octahedra. The corner-sharing octahedra tilt angles range from 47–56°. The P–H bond length is 1.40 Å. There is two shorter (1.54 Å) and one longer (1.55 Å) P–O bond length. There are two inequivalent H+0.33+ sites. In the first H+0.33+ site, H+0.33+ is bonded in a single-bond geometry to one P5+ atom. In the second H+0.33+ site, H+0.33+ is bonded in a single-bond geometry to one P5+ atom. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Zn2+ and one P5+ atom. In the second O2- site, O2- is bonded in a single-bond geometry to one P5+ atom. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Zn2+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a single-bond geometry to one P5+ atom. In the fifth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Zn2+ and one P5+ atom. In the sixth O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Zn2+ and one P5+ atom.