What is the structure represented by C=N?

The structure represented by C=N corresponds to an imine. Imine compounds are characterized by the presence of a carbon atom double-bonded to a nitrogen atom, which is precisely what the notation C=N indicates.

In more detail, imines typically form from the condensation of an amine and a carbonyl compound (like an aldehyde or ketone), where the carbonyl group is replaced by the C=N bond after the elimination of water. This functional group often appears in organic synthesis and plays a critical role in various biological processes.

Understanding the function and reactivity of imines can be further enhanced by considering their importance in synthesis and their reactivity towards nucleophiles. They can tautomerize to yield enamine forms or participate in various chemical reactions, making them significant in the context of organic chemistry and biological systems.