DOI: 10.17188/1759716
title: Materials Data on MgB4(H10N)2 by Materials Project

description: MgB4(NH10)2 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is zero-dimensional and consists of four MgB4(NH10)2 clusters. Mg2+ is bonded to seven H+0.80+ atoms to form distorted MgH7 pentagonal bipyramids that share a cornercorner with one BH3N tetrahedra and edges with three BH4 tetrahedra. There are a spread of Mg–H bond distances ranging from 1.96–2.15 Å. There are four inequivalent B3- sites. In the first B3- site, B3- is bonded to four H+0.80+ atoms to form BH4 tetrahedra that share an edgeedge with one MgH7 pentagonal bipyramid. There are a spread of B–H bond distances ranging from 1.21–1.24 Å. In the second B3- site, B3- is bonded to four H+0.80+ atoms to form BH4 tetrahedra that share an edgeedge with one MgH7 pentagonal bipyramid. There are a spread of B–H bond distances ranging from 1.21–1.24 Å. In the third B3- site, B3- is bonded to one N3- and three H+0.80+ atoms to form BH3N tetrahedra that share a cornercorner with one MgH7 pentagonal bipyramid. The B–N bond length is 1.59 Å. There is two shorter (1.21 Å) and one longer (1.24 Å) B–H bond length. In the fourth B3- site, B3- is bonded to one N3- and three H+0.80+ atoms to form BH3N tetrahedra that share an edgeedge with one MgH7 pentagonal bipyramid. The B–N bond length is 1.59 Å. There are a spread of B–H bond distances ranging from 1.21–1.24 Å. There are two inequivalent N3- sites. In the first N3- site, N3- is bonded in a tetrahedral geometry to one B3- and three H+0.80+ atoms. All N–H bond lengths are 1.03 Å. In the second N3- site, N3- is bonded in a tetrahedral geometry to one B3- and three H+0.80+ atoms. There is one shorter (1.02 Å) and two longer (1.03 Å) N–H bond length. There are twenty inequivalent H+0.80+ sites. In the first H+0.80+ site, H+0.80+ is bonded in a single-bond geometry to one N3- atom. In the second H+0.80+ site, H+0.80+ is bonded in a single-bond geometry to one N3- atom. In the third H+0.80+ site, H+0.80+ is bonded in a single-bond geometry to one N3- atom. In the fourth H+0.80+ site, H+0.80+ is bonded in a single-bond geometry to one N3- atom. In the fifth H+0.80+ site, H+0.80+ is bonded in a single-bond geometry to one N3- atom. In the sixth H+0.80+ site, H+0.80+ is bonded in a single-bond geometry to one N3- atom. In the seventh H+0.80+ site, H+0.80+ is bonded in an L-shaped geometry to one Mg2+ and one B3- atom. In the eighth H+0.80+ site, H+0.80+ is bonded in a single-bond geometry to one B3- atom. In the ninth H+0.80+ site, H+0.80+ is bonded in an L-shaped geometry to one Mg2+ and one B3- atom. In the tenth H+0.80+ site, H+0.80+ is bonded in a single-bond geometry to one B3- atom. In the eleventh H+0.80+ site, H+0.80+ is bonded in a single-bond geometry to one B3- atom. In the twelfth H+0.80+ site, H+0.80+ is bonded in an L-shaped geometry to one Mg2+ and one B3- atom. In the thirteenth H+0.80+ site, H+0.80+ is bonded in a single-bond geometry to one B3- atom. In the fourteenth H+0.80+ site, H+0.80+ is bonded in an L-shaped geometry to one Mg2+ and one B3- atom. In the fifteenth H+0.80+ site, H+0.80+ is bonded in a bent 120 degrees geometry to one Mg2+ and one B3- atom. In the sixteenth H+0.80+ site, H+0.80+ is bonded in a single-bond geometry to one B3- atom. In the seventeenth H+0.80+ site, H+0.80+ is bonded in a single-bond geometry to one B3- atom. In the eighteenth H+0.80+ site, H+0.80+ is bonded in a distorted L-shaped geometry to one Mg2+ and one B3- atom. In the nineteenth H+0.80+ site, H+0.80+ is bonded in a single-bond geometry to one B3- atom. In the twentieth H+0.80+ site, H+0.80+ is bonded in a water-like geometry to one Mg2+ and one B3- atom.