HYDRAZONE COMPOUNDS OBTAINED FROM 5-NITROSALICYLALDEHYDEBENZOYL HYDRAZONE_BASED LIGANDS AND THEIR COMPLEXES Fe2+ and Mn2+ and: SYNTHESIS, CHARACTERIZATION, AND ANTIMICROBIAL ACTIVITIES

By reacting an alcoholic medium of 5-nitrosalicylaldehyde with Benzhydrazide to create the complementary Schiff base HL+, a hydrazone Schiff base has been created. FT-IR spectral distinction, magnetic susceptibility, and UV-Vis spectroscopy were utilized to determine the melting temperatures of the synthesize compound Fe(II) and Mn(II). At room temperature, the resultant Schiff bases and complexes are lively and stable. The composite were seen to be mixable in organic solvents such Dimethyl Sulphoxide, acetone, and ethyl alcohol and imixible in pure water. These metal ions have been given an octahedral shape based on magnetic and spectroscopic observations. The synthesis of azomethine was shown by the band at 1580 cm-1 in the Schiff base's spectral data. The nitrogen atom of the imino compound group is coupled with the metallic material ions, and as a result, complexation occurs at the Nirogen-atom of the azomethine group. This is evidenced by the band's migration to a higher wavenumber in the complexes. By comparing the metal(II) complexes and Schiff base to four bacterial strains S. aureus (Gram positive), P. aeruginosa, K. pneumonicae, E. cloacae (Gram negative), and two fungi species A. niger and P. Infestans antibacterial and antifungal properties were determined. The composite showed greater antimicrobial properties as opposed to the ligand in its free form, according to the results of comparing the hindrance levels of the azomethine and its composites.