20 research outputs found
Packing Similarities and Synthon Variabilities in Aminopyridinium Sulfoisophthalates
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