СИНТЕЗ ТА БУДОВА ОНІЄВИХ ГАЛАТОГЕРМАНАТІВ(IV) З НІТРОГЕНВМІСНИМИ ОРГАНІЧНИМИ КАТІОНАМИ

Optimal methods of synthesis of germanium(IV) complexes with gallic acid (H₄Gal) and exo-ligands benzimidazole (Bim), niacin (Nic), and niamide (Nad) in aqueous solution were developed. The composition and structure of the synthesized complexes were determined using elemental analysis, IR spectroscopy, and mass spectrometry. Thermal analysis established the hydrated composition of the complexes and the nature of their thermal decomposition. It was shown that the obtained compounds belong to the cation-anion type. They contain the tris(galato)germanate anion and organic molecules protonated at the nitrogen atom of the heterocycle as the cation. The following formulas of the synthesized compounds were proposed: (HBim)₂[Ge(H₂Gal)₃]∙4H₂O (1), (HNic)₂[Ge(H₂Gal)₃]∙3H₂O (2), (HNad)₂[Ge(H₂Gal)₃]∙4H₂O (3).