Acta Cryst. (2009). E65, o2111  [ doi:10.1107/S160053680903044X ]

4-Chloroanilinium 2-carboxy-4,5-dichlorobenzoate

G. Smith, U. D. Wermuth and J. M. White

Abstract: The structure of the 1:1 proton-transfer compound of 4-chloroaniline with 4,5-dichlorophthalic acid (DCPA), viz. C₆H₇ClN⁺·C₈H₃Cl₂O₄^-, has been determined at 130 K. The non-planar hydrogen phthalate anions and the 4-chloroanilinium cations form two-dimensional O-HO and N-HO hydrogen-bonded substructures which have no peripheral extension. Between the sheets there are weak - associations between alternating cation-anion aromatic ring systems [shortest centroid-centroid separation = 3.735 (4) Å].

Online 8 August 2009

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