DOI: 10.17188/1734316
title: Materials Data on Mg2Be3P3H13O19 by Materials Project

description: Mg2Be3P3H13O19 crystallizes in the monoclinic P2_1 space group. The structure is three-dimensional. there are two inequivalent Mg2+ sites. In the first Mg2+ site, Mg2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Mg–O bond distances ranging from 2.02–2.28 Å. In the second Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with three PO4 tetrahedra. There are a spread of Mg–O bond distances ranging from 2.07–2.15 Å. There are three inequivalent Be2+ sites. In the first Be2+ site, Be2+ is bonded to four O2- atoms to form BeO4 tetrahedra that share corners with two BeO4 tetrahedra and corners with three PO4 tetrahedra. There are a spread of Be–O bond distances ranging from 1.57–1.74 Å. In the second Be2+ site, Be2+ is bonded to four O2- atoms to form BeO4 tetrahedra that share corners with two BeO4 tetrahedra and corners with three PO4 tetrahedra. There are a spread of Be–O bond distances ranging from 1.59–1.73 Å. In the third Be2+ site, Be2+ is bonded to four O2- atoms to form BeO4 tetrahedra that share corners with two BeO4 tetrahedra and corners with three PO4 tetrahedra. There is three shorter (1.60 Å) and one longer (1.74 Å) Be–O bond length. There are three inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one MgO6 octahedra and corners with three BeO4 tetrahedra. The corner-sharing octahedral tilt angles are 50°. There are a spread of P–O bond distances ranging from 1.51–1.63 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one MgO6 octahedra and corners with three BeO4 tetrahedra. The corner-sharing octahedral tilt angles are 52°. There are a spread of P–O bond distances ranging from 1.53–1.57 Å. In the third P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one MgO6 octahedra and corners with three BeO4 tetrahedra. The corner-sharing octahedral tilt angles are 48°. There are a spread of P–O bond distances ranging from 1.51–1.66 Å. There are thirteen inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a linear geometry to one H1+ and one O2- atom. The H–H bond length is 0.85 Å. The H–O bond length is 1.55 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the third H1+ site, H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.10 Å) and one longer (1.45 Å) H–O bond length. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one H1+ atom. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. In the seventh H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the eighth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the ninth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the tenth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the eleventh H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. In the twelfth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the thirteenth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.02 Å. There are nineteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a trigonal planar geometry to one Be2+, one P5+, and one H1+ atom. In the second O2- site, O2- is bonded in a bent 120 degrees geometry to one Be2+ and one P5+ atom. In the third O2- site, O2- is bonded in a trigonal planar geometry to one Be2+, one P5+, and one H1+ atom. In the fourth O2- site, O2- is bonded in a bent 150 degrees geometry to one Be2+ and one P5+ atom. In the fifth O2- site, O2- is bonded in a bent 150 degrees geometry to one Be2+ and one P5+ atom. In the sixth O2- site, O2- is bonded in a bent 150 degrees geometry to one Be2+ and one P5+ atom. In the seventh O2- site, O2- is bonded in a bent 120 degrees geometry to one Be2+ and one P5+ atom. In the eighth O2- site, O2- is bonded in a bent 120 degrees geometry to one Be2+ and one P5+ atom. In the ninth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Be2+ and one P5+ atom. In the tenth O2- site, O2- is bonded in a 3-coordinate geometry to two Mg2+ and one P5+ atom. In the eleventh O2- site, O2- is bonded in a 3-coordinate geometry to two Mg2+ and one P5+ atom. In the twelfth O2- site, O2- is bonded in a 3-coordinate geometry to two Mg2+ and one P5+ atom. In the thirteenth O2- site, O2- is bonded in a 1-coordinate geometry to one Mg2+ and one H1+ atom. In the fourteenth O2- site, O2- is bonded in a distorted single-bond geometry to one Mg2+ and one H1+ atom. In the fifteenth O2- site, O2- is bonded in a 1-coordinate geometry to one Mg2+ and two H1+ atoms. In the sixteenth O2- site, O2- is bonded in a distorted water-like geometry to one Mg2+ and two H1+ atoms. In the seventeenth O2- site, O2- is bonded in a distorted water-like geometry to one Mg2+ and two H1+ atoms. In the eighteenth O2- site, O2- is bonded in a 2-coordinate geometry to one Mg2+ and two H1+ atoms. In the nineteenth O2- site, O2- is bonded in a trigonal pyramidal geometry to three Be2+ and one H1+ atom.