dicarboxylic acid dianion 87.980 A carboxylic acid dianion obtained by deprotonation of both carboxy groups of any dicarboxylic acid. C2O4R CHEBI:13632 CHEBI:23688 CHEBI:23689 CHEBI:28965 CHEBI:38711 [O-]C(=O)[*]C([O-])=O a dicarboxylate chebi_ontology dicarboxylate dicarboxylates dicarboxylic acid dianion dicarboxylic acid dianions carboxylic acid anion dicarboxylic acid anion