Materials Data on K2Zn3P4(HO3)4 by Materials Project

Abstract

K2Zn3P4(HO3)4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 6-coordinate geometry to seven O2- atoms. There are a spread of K–O bond distances ranging from 2.70–3.36 Å. In the second K1+ site, K1+ is bonded to seven O2- atoms to form distorted KO7 pentagonal bipyramids that share corners with three ZnO4 tetrahedra, corners with five PHO3 tetrahedra, an edgeedge with one KO7 pentagonal bipyramid, an edgeedge with one PHO3 tetrahedra, and edges with two equivalent ZnO4 tetrahedra. There are a spread of K–O bond distances ranging from 2.73–3.10 Å. There are three inequivalent Zn2+ sites. In the first Zn2+ site, Zn2+ is bonded to four O2- atoms to form ZnO4 tetrahedra that share corners with two equivalent KO7 pentagonal bipyramids and corners with four PHO3 tetrahedra. There are a spread of Zn–O bond distances ranging from 1.95–1.98 Å. In the second Zn2+ site, Zn2+ is bonded to four O2- atoms to form ZnO4 tetrahedra that share a cornercorner with one KO7 pentagonal bipyramid, corners with four PHO3 tetrahedra, and edges with two equivalent KO7 pentagonal bipyramids. There are a spread of Zn–O bond distances ranging from 1.95–1.98 Å. In the third Zn2+ site, Zn2+ is bonded to four O2- atoms to form ZnO4 tetrahedra that share corners with four PHO3 tetrahedra. There are a spread of Zn–O bond distances ranging from 1.95–1.99 Å. There are four inequivalent P3+ sites. In the first P3+ site, P3+ is bonded to one H1+ and three O2- atoms to form distorted PHO3 tetrahedra that share corners with three equivalent KO7 pentagonal bipyramids and corners with three ZnO4 tetrahedra. The P–H bond length is 1.41 Å. There is two shorter (1.54 Å) and one longer (1.55 Å) P–O bond length. In the second P3+ site, P3+ is bonded to one H1+ and three O2- atoms to form distorted PHO3 tetrahedra that share corners with two equivalent KO7 pentagonal bipyramids and corners with three ZnO4 tetrahedra. The P–H bond length is 1.41 Å. There are a spread of P–O bond distances ranging from 1.53–1.55 Å. In the third P3+ site, P3+ is bonded to one H1+ and three O2- atoms to form distorted PHO3 tetrahedra that share corners with three ZnO4 tetrahedra. The P–H bond length is 1.41 Å. All P–O bond lengths are 1.54 Å. In the fourth P3+ site, P3+ is bonded to one H1+ and three O2- atoms to form distorted PHO3 tetrahedra that share corners with three ZnO4 tetrahedra and an edgeedge with one KO7 pentagonal bipyramid. The P–H bond length is 1.41 Å. There is two shorter (1.54 Å) and one longer (1.55 Å) P–O bond length. There are four inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one P3+ atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one P3+ atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one P3+ atom. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one P3+ atom. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to two K1+, one Zn2+, and one P3+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to one K1+, one Zn2+, and one P3+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to one K1+, one Zn2+, and one P3+ atom. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Zn2+, and one P3+ atom. In the fifth O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent K1+, one Zn2+, and one P3+ atom. In the sixth O2- site, O2- is bonded in a 3-coordinate geometry to one K1+, one Zn2+, and one P3+ atom. In the seventh O2- site, O2- is bonded in a 3-coordinate geometry to one K1+, one Zn2+, and one P3+ atom. In the eighth O2- site, O2- is bonded in a 3-coordinate geometry to one K1+, one Zn2+, and one P3+ atom. In the ninth O2- site, O2- is bonded in a distorted trigonal planar geometry to one K1+, one Zn2+, and one P3+ atom. In the tenth O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Zn2+, and one P3+ atom. In the eleventh O2- site, O2- is bonded in a distorted trigonal planar geometry to one K1+, one Zn2+, and one P3+ atom. In the twelfth O2- site, O2- is bonded in a 3-coordinate geometry to one K1+, one Zn2+, and one P3+ atom.