Dicarboxylated

Dicarboxylated is a chemical descriptor applied to a molecule that bears two carboxyl functional groups, typically carboxyl groups (−COOH) or their derivatives (carboxylates). The term is used across organic, inorganic, and biochemistry to indicate the presence or introduction of two carboxyl groups on a molecule, rather than to define a distinct class of compounds.

Common uses include describing dicarboxylic acids or substituted molecules that carry two carboxyl groups, such as benzene rings bearing two carboxyl groups (terephthalic acid, phthalic acid); indicating that two carboxyl groups have been added to a molecule through carboxylation reactions; and referring to ligands with two carboxylate donor sites in coordination chemistry.

In practice, dicarboxylated can describe a neutral dicarboxyl group-containing molecule or its ionic/ester/amide derivatives. The precise form depends on pH and chemical context (CO2H vs COO−; mono- or diesters).

See also: dicarboxylate, dicarboxylic acid, carboxylation.