Preparation and structural characterisation of the compound [MeC5H4NCOOH][ZnCl3(H2O)] · [MeC5H4NCOO]H2O

The reaction of the ZnCl2 with 6-methyl-2-pyridinecarboxylic acid, with a 1:2 metal-to-ligand molar ratio, affords optimum yields for the synthesis of [MeC5H4NCOOH][ZnCl3(H2O)] · [MeC5H4NCOO]H2O. The new complex has been characterised by elemental analyses, IR, 1H and 13C{1H} NMR, and single crystal X-ray diffraction methods. The X-ray structure analysis revealed that this structure consists of [ZnCl3(H2O)]− anions, [MeC5H4NCOOH]+ cations, [MeC5H4NCOO] zwitterions, and solvent molecules (H2O) by means of hydrogen bonds.