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Sr2N is trigonal omega-like structured and crystallizes in the trigonal R-3m space group. The structure is two-dimensional and consists of three Sr2N sheets oriented in the (0, 0, 1) direction. Sr is bonded in a distorted T-shaped geometry to three equivalent N atoms. All Sr–N bond lengths are 2.62 Å. N is bonded to six equivalent Sr atoms to form edge-sharing NSr6 octahedra.
Sr2N is High Pressure (4-7GPa) Tellurium-derived structured and crystallizes in the monoclinic C2/m space group. The structure is zero-dimensional and consists of two ammonia molecules and two Sr clusters. In each Sr cluster, Sr is bonded in a single-bond geometry to one Sr atom. The Sr–Sr bond length is 4.45 Å.