Sonochemical synthesis, characterization, biological applications, and DFT study of new nano-sized manganese complex of azomethine derivative of diaminomaleonitrile

The characterization of a new, synthesized Mn(II) Schiff base complex of the [MnL2Cl]Cl type (where L = 2-((pyridine-4-yl)metheleneamino)-3-aminomaleonitrile) was carried out by FT-IR, UV–Vis, DRS, GC–Mass, photoluminescence spectroscopy (PL) and elemental analysis. The production of Mn3O4 nanoparticles using thermal decomposition and its spectral properties in the current study is being checked. The nano compounds were characterized by X-ray diffraction, scanning electron microscopy (SEM), and the X-ray energy-dispersive spectrometry analyses. Synthesized manganese oxide nanoparticles have a tetragonal structure with the average size of 25–150 nm. The results of SEM showed that the morphology of [MnL2Cl]Cl was rod-like while the morphology of the Mn3O4 was rod-like as well as spherical. Also, the metal complexes’ antibacterial and antifungal activities were evaluated. The results of the microbiology activities indicated that the metal compounds exhibited stronger microbiology efficiencies than the ligand did.