Synthesis of new ligands containing heterocyclic hydrazone groups

In this study, o-hydroxybenzoyl hydrazine and p-hydroxybenzoyl hydrazine react with 1,3-dimethyl-5-acetyl-barbituric acid in ethanol to give two new ligands H2L1 (85% yield) and H2L2 (88% yield) respectively. The copper (II) complexes [Cu(L1)(DMSO)] and [Cu(L2)(DMSO)] were prepared by the stoichiometric reaction of the CuCl2.5H2O with the H2L1 and H2L2 in a molar ratio (M:L) of 1:1. All compounds have been fully characterized using conventional spectroscopic techniques by 1H-NMR, 13C-NMR, FT-IR. X -ray structure analysis was carried out on the adducts [Cu(L1)(DMSO)] which crystallizes in the triclinic P-1 space group.This operation, in addition to neutral conditions synthesized hydrazone derivatives, solid-liquid extraction and to it transition metals Pb (II), Zn (II) and Cd (II) complexed their ability susceptibility was studied.