Abstract
Abstract: This paper is concerned with the preparation and characterization of Schiff base ligands derived from the condensation of salicylaldehyde with three different diamines, namely, ethylenediamine, o-phenylenediamine, and trans-1,2-diaminocyclohexane. The Schiff base ligands were characterized by elemental analysis, melting point, FTIR, UV-Vis, 1H-NMR and 13C-NMR. The Schiff base ligands are reacted with palladium(II) ion via direct reaction or using a template method. Identical complexes were obtained from the two methods with the same percentage yields. The formulas obtained for the complexes are PdC16H16N2O2Cl2, [PdL1]Cl2; PdC16H16N2O2Br2, [PdL1]Br2; PdC16H16N2O2.(BF4)2, [PdL1](BF4)2; PdC20H16N2O2Cl2, [PdL2Cl]Cl; PdC20H16N2O2Br2, [PdL2]Br2; PdC20H15N2O2.BF4, [PdL2]BF4; PdC20H22N2O2Cl2, [PdL3]Cl2; PdC20H22N2O2Br2, [PdL3]Br2; PdC20H20N2O2.2H2O, [PdL3].2H2O. The isolated compounds were characterized based on their melting points, elemental analyses, conductivity measurements, nuclear magnetic resonance, FTIR and electronic absorption spectra.
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