Synthesis, characterization and thermal study of the new Schiff base ligand derived from sulfonic acid with Cobalt, Nickel, Zinc and cadmium complexes

Abstract

      We study in the presented work Schiff base formation from reaction of 4-amino-3-naphthol-1-sulfonic acid with 3-chioro-borobenzaldehyde. Common organic compounds of major relevance in coordination chemistry are Schiff bases since they can combine with metal ions for the purpose of generating metal complexes. The Schiff base has been formed then reacted with certain transition metal chlorides including nickel, cobalt, cadmium, and zinc. This reaction produced unique metal complexes with particular qualities. The characteristics and structure of such complexes were ascertained by means of numerous advanced analytical approaches. Among such methods were infrared (IR) spectroscopy, which enabled the ligand-metallic element chemical bond identification. Additionally utilized to investigate light absorption and extract information on the electronic interactions in the complexes is ultraviolet (UV) spectroscopy. Furthermore examined internal structure regarding the complexes was nuclear magnetic resonance (NMR) spectroscopy. At last, the stability of complexes under various temperatures has been investigated with the use of the thermogravimetric (TGA) analyses. The work intends to generate complexes with physical and chemical characteristics suitable for use in materials science, analytical chemistry, and environmental chemistry as well as to deepen knowledge of Schiff base interactions with the metal ions.