Synthesis and characterization of a series of new phenanthrenequinone thiosemicarbazone palladium complexes

CHED 1252

Rachel C. Huxford, rchuxford21@tntech.edu and E. C. Lisic, edlisic@tntech.edu. Department of Chemistry, Tennessee Technological University, Box 5055, Cookeville, TN 38505
This work will present the synthesis of a new series of phenanthrenequinone thiosemicarbazone palladium complexes. One of these complexes, derived from phenanthrenequinone thiosemicarbazone, has previously been described in literature. The other new Pd(L)Cl compounds of this series are synthesized using phenanthrenequinone methylthiosemicarbazone, phenanthrenequinone ethylthiosemicarbazone, phenanthrenequinone phenylthiosemicarbazone, and phenanthrenequinone benzylthiosemicarbazone. Each tridentate thiosemicarbazone ligand, reacted with K2PdCl4, results in a square planar palladium complex. The five compounds were characterized via 1H NMR and IR spectroscopy. Comparison of the NMR spectra of the thiosemicarbazone ligands and the palladium complex show complexation of the ligand to the palladium metal.