Zn(II) and Pd(II) complexes of thiosemicarbazone-S-alkyl esters derived from 2/3-formylpyridine

Abstract

Representative S-methyl/ethyl-4-H/phenylthiosemicarbazones and their Zn(II) and Pd(II) complexes were synthesized. Characterization of the 1:1 complexes, [Zn(L)Cl-2], [Pd(L)Cl-2], and [Pd(L)Cl]Cl, was accomplished by means of elemental analyses, IR and H-1 NMR spectra. The multidentate S-alkyl thiosemicarbazones coordinate as mono-, bi-, or tridentate ligands depending on the types of the alkyl moiety and metal ion.