“…2 shows the crystal structure of Mg(NH 2 ) 2 determined by the neutron diffraction. It can be seen that the Mg 2+ cation is tetrahedrally coordinated by four amide [NH 2 ] − anions [57,58]. The typical IR absorption peaks of N-H vibration modes and H-N-H deformation vibration modes of Mg(NH 2 ) 2 are centered at 3325, 3274 and 1572 cm −1 , respectively [55].…”