Li2Mg(NH)2 crystallizes in the orthorhombic Pbcn space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a 4-coordinate geometry to four equivalent N(1) atoms. In the second Li site, Li(2) is bonded in a 4-coordinate geometry to two equivalent N(1) and two equivalent H(1) atoms. Mg(1) is bonded to four equivalent N(1) atoms to form corner-sharing MgN4 tetrahedra. N(1) is bonded in a distorted single-bond geometry to one Li(2), two equivalent Li(1), two equivalent Mg(1), and one H(1) atom. H(1) is bonded in a single-bond geometry to one Li(2) and one N(1) atom.
Li2Mg(NH)2 crystallizes in the orthorhombic Pbcn space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a 4-coordinate geometry to four equivalent N(1) atoms. There are two shorter (2.06 Å) and two longer (2.17 Å) Li(1)-N(1) bond lengths. In the second Li site, Li(2) is bonded in a 4-coordinate geometry to two equivalent N(1) and two equivalent H(1) atoms. Both Li(2)-N(1) bond lengths are 2.16 Å. Both Li(2)-H(1) bond lengths are 2.12 Å. Mg(1) is bonded to four equivalent N(1) atoms to form corner-sharing MgN4 tetrahedra. There are two shorter (2.11 Å) and two longer (2.12 Å) Mg(1)-N(1) bond lengths. N(1) is bonded in a distorted single-bond geometry to one Li(2), two equivalent Li(1), two equivalent Mg(1), and one H(1) atom. The N(1)-H(1) bond length is 1.03 Å. H(1) is bonded in a single-bond geometry to one Li(2) and one N(1) atom.