SYNTHESİS AND PHYSİCO-CHEMİCAL STUDY OF COMPLEXES OF BENZOATES OF METALS Cu(II) AND Ni(II) WİTH NİCOTİNAMİDE

Abstract

Complexes of Cu(II) and Ni(II) 4-chlorobenzoate salts with nicotinamide were synthesized in the research work. The structures of the new complexes were confirmed by elemental analysis, IR spectroscopy and DTA analysis.

Transition metal complexes of organic acids have a wide range of applications in medicine, agriculture, biology and other fields. Metal complexes of organic acids are formed due to oxygens of the carboxyl group [1]. It is known that nicotinamide is the main component of nicotinamide adenine dinucleotide, which plays an important role in all living cells. It participates as a donor molecule in the process of synthesis of such complexes. When the compound nicotinamide is taken into the body, it is converted into vitamin B3 [2]. The nicotinamide molecule is called an N-donor ligand due to the nitrogen atom in the pyridine fragment. The nicotinamide molecule participates in complex formation as a mono and bidentate ligand. At the same time, it can form a bridge between the metal atoms involved in the formation of the complex through two donor atoms. [3-5].

In recent years, metal-organic frameworks have attracted attention not only for their structures, but also for their applications in many fields, such as biological, magnetic, optical, ion exchange and catalysis. The composition of organic ligands, crystallization conditions, metal-ligand ratio, solvent used in the synthesis, etc., influence the structure of the synthesized complexes from the interaction of the mentioned compounds. Many factors have a noticeable effect.

In the synthesis, new divalent para fluorobenzoate complexes of copper and nickel metals with nicotinamide were obtained. The structures of the complexes were confirmed by elemental analysis, IR spectroscopy and DTA analysis.