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This paper reviews the synthesis and spectral studies of some complexes of palladium with thiosemicarbazones: Pd(L 1 )NH 3 (L 1 : pyruvic acid thiosemicarbazone) and Pd(L i ) 2 ), (i: 2-4, thiosemicarbazone of: acetophenone (L 2 ), benzaldehyde (L 3 ), p-dimethylaminobenzaldehyde(L 4 )). The ligands and complexes are characterized by means of chemical analysis, thermal analysis, IR, ESI-MS and 1 H-NMR spectroscopy. The obtained data show that in Pd(L 1 )NH 3, three coordinate sites are realized by S, N(1) and O-atoms of  L 1 and the fourth coordinate site  by NH 3 -group; in Pd(L i ) 2 ) complexes, L i acts as anionic bidentate ligands, two coordinate bonds realize through S and N(1) atoms. Especially, the obtained data 1 H-NMR spectrum of Pd(L 2 ) 2 indicate that this complex exists in two isomers, supposed to be cis and trans, in DMSO solutions.

Synthesis and spectral studies of complexes between palladium and some thiosemicarbazones