Journal article
Two- and three-dimensional hydrogen-bonded structures in the 1:1 proton-transfer compounds of 4,5-dichlorophthalic acid with the isomeric monoaminobenzoic acids
G Smith, UD Wermuth, JM White
Acta Crystallographica Section C Crystal Structure Communications | WILEY-BLACKWELL | Published : 2008
Abstract
The crystal structures of the 1:1 proton-transfer compounds of 4,5-dichloro-phthalic acid with the three isomeric mono-amino-benzoic acids, namely the hydrate 2-carboxy-anilinium 2-car-b-oxy-4,5-dichloro-benzoate dihydrate, C7H8NO2 +· C8H3Cl2O4 -·2H2O, (I), and the anhydrous salts 3-carboxy-anilinium 2-carb-oxy-4,5-dichloro-benzoate, C7H 8NO2 +·C8H3Cl2O4 -, (II), and 4-carboxy-anilinium 2-carb-oxy-4,5-dichloro-benzoate, C7H 8NO2 +·C8H3Cl2O4 -, (III), have been determined at 130 K. Compound (I) has a two-dimensional hydrogen-bonded sheet structure, while (II) and (III) are three-dimensional. All three compounds feature sheet substructures formed through anilinium N + - H⋯Ocarbox-yl and anion ..
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Funding Acknowledgements
The authors acknowledge financial support from the School of Physical and Chemical Sciences, Queensland University of Technology, the School of Biomolecular and Physical Sciences, Griffith University, and the School of Chemistry, University of Melbourne.