Materials Data on Mg(FeN)2 by Materials Project

Abstract

Mg(FeN)2 crystallizes in the orthorhombic Pmm2 space group. The structure is two-dimensional and consists of one Mg(FeN)2 sheet oriented in the (0, 0, 1) direction. Mg2+ is bonded to four N3- atoms to form corner-sharing MgN4 tetrahedra. There are two shorter (2.18 Å) and two longer (2.19 Å) Mg–N bond lengths. There are two inequivalent Fe2+ sites. In the first Fe2+ site, Fe2+ is bonded in a linear geometry to two equivalent N3- atoms. Both Fe–N bond lengths are 1.76 Å. In the second Fe2+ site, Fe2+ is bonded in a linear geometry to two equivalent N3- atoms. Both Fe–N bond lengths are 1.77 Å. There are two inequivalent N3- sites. In the first N3- site, N3- is bonded in a see-saw-like geometry to two equivalent Mg2+ and two equivalent Fe2+ atoms. In the second N3- site, N3- is bonded in a see-saw-like geometry to two equivalent Mg2+ and two equivalent Fe2+ atoms.