Amidide

Amidide is not a standard or widely used term in contemporary chemistry. In formal nomenclature, it does not designate a clearly defined functional group or class of compounds in the way that amide, amidine, or other established terms do. When encountered, the word often raises questions about whether it is a misspelling, an archaic usage, or a niche usage specific to a particular text or subfield.

Possible interpretations in the literature include:

- A misspelling or variant of amidine, the functional group with the core structure C(=NH)NR2, common in heterocyclic chemistry and in certain base-catalyzed reactions.

- An historical or informal label for an amide-related species, such as an amide derivative or an amide anion-like species, used in older or less standardized texts. Modern nomenclature typically uses “amide” or “amidate” depending on the context, rather than “amidide.”

- A coined term in a specific research paper or discussion to denote a particular compound or ligand, in which case the precise meaning should be taken from that source.

In current chemical nomenclature, amidide is not recognized as a distinct, universally defined category. If the term is encountered, it is advisable to consult the original source for the intended meaning and to rely on established terms (amidine, amide, amidate) for clear communication. See also amidine, amide, and amidate for related functional groups.