Acta Crystallographica Section C

Crystal Structure Communications

Volume 63, Part 11 (November 2007)

organic compounds

 

Two salts of 5-sulfosalicylic acid and 3-aminopyridine

X.-G. Meng, C.-S. Zhou, L. Wang and C.-L. Liu

Abstract: 5-Sulfosalicylic acid (5-SSA) and 3-aminopyridine (3-APy) crystallize in the same solvent system, resulting in two kinds of 1:1 proton-transfer organic adduct, namely 3-aminopyridinium 3-carboxy-4-hydroxybenzenesulfonate monohydrate, C₅H₇N₂⁺·C₇H₅O₆S^-·H₂O or 3-APy·5-SSA·H₂O, (I), and the anhydrous adduct, C₅H₇N₂⁺·C₇H₅O₆S^- or 3-APy·5-SSA, (II). Both compounds have extensively hydrogen-bonded three-dimensional layered polymer structures, with interlayer homo- and heterogeneous - interactions in (I) and (II), respectively.

Formula: C₅H₇N₂⁺·C₇H₅O₆S^-·H₂O and C₅H₇N₂⁺·C₇H₅O₆S^-

	Structure factor file (CIF format) (136.1 kbytes) [ doi:10.1107/S0108270107047270/av3101Isup2.hkl ] Contains datablock I
	Structure factor file (CIF format) (298.4 kbytes) [ doi:10.1107/S0108270107047270/av3101IIsup3.hkl ] Contains datablock II

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