imides

1. Diacyl derivatives of ammonia or primary amines, especially those cyclic compounds derived from diacids, e.g.
   👁 molecule
   
2. In additive nomenclature, in which imide is analogous to oxide, the term is used to name compounds of the type $\ce{R3Y^{+}-N^{-}R}$ ($\ce{Y = N, P}$) and $\ce{R2Z^{+}-N^{-}R}$ ($\ce{Z = O, S, Se, Te}$), which are the products of formal attachment of an $\ce{RN=}$ group to $\ce{N}$, $\ce{P}$, $\ce{O}$, $\ce{S}$, $\ce{Se}$, $\ce{Te}$. E.g. amine imides, azomethine imides.
3. Salts having the anion $\ce{RN^{2−}}$.