Acta Crystallographica Section C

Crystal Structure Communications

Volume 63, Part 8 (August 2007)

organic compounds

 

Different supramolecular assemblies in two 1:1 proton-transfer compounds of sulfobenzoic acids with aromatic amines

J. Zhang and L.-G. Zhu

Abstract: Two 1:1 proton-transfer complexes of sulfobenzoic acids with aromatic amines, namely 4-[2-(4-pyridyl)ethenyl]pyridinium 2-carboxybenzenesulfonate, C₁₂H₁₁N₂⁺·C₇H₅O₅S^-, (I), and 1,10-phenanthrolin-1-ium 4-carboxybenzenesulfonate dihydrate, C₁₂H₉N₂⁺·C₇H₅O₅S^-·2H₂O, (II), have very different hydrogen-bonding patterns compared with reported organic sulfobenzoic acid complexes. In (I), two cations and two anions form a four-molecule loop, in which - interactions occur. In (II), the anions and water molecules form a three-dimensional hydrogen-bonding network, while the cations only act as pendant components. The water molecules play a central role in the formation of the abundant hydrogen-bonding architecture in (II). The relative poorness and richness of hydrogen bonds in (I) and (II), respectively, give rise to novel hydrogen-bonding patterns.

Formula: C₁₂H₁₁N₂⁺·C₇H₅O₅S^- and C₁₂H₉N₂⁺·C₇H₅O₅S^-·2H₂O

	Structure factor file (CIF format) (148.7 kbytes) [ doi:10.1107/S0108270107033008/sq3086Isup2.hkl ] Contains datablock I
	Structure factor file (CIF format) (205.0 kbytes) [ doi:10.1107/S0108270107033008/sq3086IIsup3.hkl ] Contains datablock II

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