“…For this reason, the presence of water and solvent molecules promotes the stability of the supramolecular structures of -salts. In addition, in all cases, bands from C=N and N=C-C are present at 1621-1631 cm -1 and 1468-1497 cm -1 , respectively [37,40,45]. These results are in agreement with the vibrational spectra and the results of crystallographic studies.…”