Synthesis and characterization of a number of complexes of Pt(II), Pd(II), Cd(II) and Zn(II) with new ligands containing oxygen

New mononuclear complexes of some transition metal ion with di-dentate ligand have been synthetized and characterized. The Pt(II), Pd(II), Cd(II) and Zn(II) complexes were synthesized by directly reaction of the above ligand with metal chlorides in (1:1) (ligand:metal) molar ratio in ethanolic medium. Formulated complexes classified by elementary analysis, spectral exploration (FTIR, UV/Vis), 1H-NMR measure, conduction measure and electronic spectra rates suggest tetrahedral geometric for every metal complex, with the exception of Pt(II) complexes, which have octahedral geometry, and Pd(II) compound, which have square planar geometry and the study of inhibiting effect on the growth of different types of bacteria which are strains staph. aurous and Klebsiella pneumoniae. The results indicate that all complexes have strong effect on different types of bacteria. KEY WORDS: Dicarboxlate, Direct reaction, Tetrahedral geometry, Ligand, Mononuclear, Complexes Bull. Chem. Soc. Ethiop. 2025, 39(7), 1349-1361. DOI: https://dx.doi.org/10.4314/bcse.v39i7.9