Materials Data on Mg4N6O19 by Materials Project
Mg4N6O19 crystallizes in the trigonal P3 space group. The structure is zero-dimensional and consists of three Mg4N6O19 clusters. In one of the Mg4N6O19 clusters, there are two inequivalent Mg2+ sites. In the first Mg2+ site, Mg2+ is bonded to four O2- atoms to form corner-sharing MgO4 tetrahedra. There are a spread of Mg–O bond distances ranging from 1.97–2.01 Å. In the second Mg2+ site, Mg2+ is bonded to four O2- atoms to form corner-sharing MgO4 tetrahedra. There is one shorter (1.94 Å) and three longer (2.01 Å) Mg–O bond length. There are two inequivalent N5+ sites. In the first N5+ site, N5+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.22 Å) and two longer (1.30 Å) N–O bond length. In the second N5+ site, N5+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of N–O bond distances ranging from 1.21–1.30 Å. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one N5+ atom. In the second O2- site, O2- is bonded in a single-bond geometry to one N5+ atom. In the third O2- site, O2- is bonded in a bent 120 degrees geometry to one Mg2+ and one N5+ atom. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to one Mg2+ and one N5+ atom. In the fifth O2- site, O2- is bonded in a bent 120 degrees geometry to one Mg2+ and one N5+ atom. In the sixth O2- site, O2- is bonded in a bent 120 degrees geometry to one Mg2+ and one N5+ atom. In the seventh O2- site, O2- is bonded in a tetrahedral geometry to four Mg2+ atoms. In two of the Mg4N6O19 clusters, there are two inequivalent Mg2+ sites. In the first Mg2+ site, Mg2+ is bonded to four O2- atoms to form corner-sharing MgO4 tetrahedra. There is one shorter (1.95 Å) and three longer (1.99 Å) Mg–O bond length. In the second Mg2+ site, Mg2+ is bonded to four O2- atoms to form corner-sharing MgO4 tetrahedra. There is one shorter (1.95 Å) and three longer (1.99 Å) Mg–O bond length. There are two inequivalent N5+ sites. In the first N5+ site, N5+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of N–O bond distances ranging from 1.21–1.30 Å. In the second N5+ site, N5+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.21 Å) and two longer (1.30 Å) N–O bond length. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one N5+ atom. In the second O2- site, O2- is bonded in a tetrahedral geometry to four Mg2+ atoms. In the third O2- site, O2- is bonded in a bent 120 degrees geometry to one Mg2+ and one N5+ atom. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to one Mg2+ and one N5+ atom. In the fifth O2- site, O2- is bonded in a single-bond geometry to one N5+ atom. In the sixth O2- site, O2- is bonded in a bent 120 degrees geometry to one Mg2+ and one N5+ atom. In the seventh O2- site, O2- is bonded in a bent 120 degrees geometry to one Mg2+ and one N5+ atom.