The term is obscure; derivatives of NH−2 are almost invariably referred to as amides,[1][2][3] despite the fact that amide also refers to the organic functional group –C(=O)−NR2.

It is produced by deprotonation of ammonia, usually with strong bases or an alkali metal.

The alkali metal derivatives are best known, although usually referred to as alkali metal amides.

These salt-like solids are produced by treating liquid ammonia with strong bases or directly with the alkali metals (blue liquid ammonia solutions due to the solvated electron):[1][2][4] Silver(I) amide (AgNH2) is prepared similarly.

[3] Transition metal complexes of the amido ligand are often produced by salt metathesis reaction or by deprotonation of metal ammine complexes.