Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 10 (October 2013)


organic compounds



sj5350 scheme

Acta Cryst. (2013). E69, o1546    [ doi:10.1107/S1600536813025014 ]

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

G. Smith and U. D. Wermuth

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 [pi]-[pi] ring interactions [minimum ring centroid separation = 3.734 (3) Å] give rise to a sheet structure lying parallel to (001).


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