NITROGEN HYDRIDES

You say ammonium nitride will not exist but will instead revert to ammonia. However 3 moles of ammonium azide could spontaneously rearrange to 4 moles of ammonia and 4 moles of dinitrogen...yet ammonium azide persists enough to do a crystal structure, and is modestly shelf stable as a white powdered salt comprised of more than 94% by weight nitrogen. (a) hydrazoic acid (b) ammonia (c) hydrazine (d) diazene (e) imidogen (f) ammonium azide (g) ammonium nitride (h) oligoimidogens (i) polyimidogen...the list of hydrides of N is short but provocative. Hydrazine is a type of rocket fuel for example...it is very important to the space industry. The hydrides of N could hold important, yet to be made, discoveries in chemistry. For example, could ammonium azide be isomerized in to polyimidogen at some PT conditions? Could amino terminated oligoimidogens be isolated for example? It is all at the core of chemistry applied and theoretical.