4-Methoxyanilinium 2-carboxy-4,5-dichlorobenzoate

Abstract

In the title salt C7H10NO+·C8H3Cl2O4− the benzene rings of the cation and anion are essentially parallel [inter-ring dihedral angle 4.8 (2)°]. In the anion the carboxylic acid and carboxylate groups make dihedral angles of 19.0 (2) and 79.5 (2)°, respectively, with the benzene ring. Aminium N—H...O, carboxylic acid O—H...O and weak aromatic C—H...O hydrogen-bonding associations with carboxyl O-atom acceptors together with cation–anion π–π ring interactions [minimum ring centroid separation = 3.734 (3) Å] give rise to a sheet structure lying parallel to (001).