Abstract
Different salts of 5-sulfoisophthalic acid with aminosubstituted monocyclic Lewis bases, 2-aminipyridine, 3-aminopyridine, 4-aminopyridine, 2,6-diaminopyridine, have been prepared and studied by means of X-ray crystallography, Fourier transform infrared and Raman spectroscopy, and thermogravimetric–differential thermal analysis and differental scanning calorimetry methods. The crystal networks have been analyzed in view of competitive hydrogen bond interactions issued between multiple functional groups in different topological and stoichiomeric combinations allowing for formation of variable synthons. A statistical analysis of the most prominent homo- and heteromeric motifs, which can be formed between the functional groups, has been performed with the use of the Mercury Solid Form module in order to look for preferred interactions in extended network formation. Eighteen different synthons are used in the presented crystal networks, some of which are really prolific and others are unique. The role of water molecule for the network formations using four different water synthons is also elucidated.
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