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Eight new [NiL1] (1), [CuL1] (2), [CoL1] (3) and [CdL1] (4), [NiL2] (5), [CuL2] (6), [CoL2] (7) and [CdL2] (8) complexes were prepared by the reaction of two new Schiff base ligands and Ni(II), Cu(II), Co(II) and Cd(II) metal ions in equemolar ratios. The ligands, H2L1 and H2L2, were synthesized by reaction of N,N'(2-aminoethyl)(3-aminopropyl)piperazine and 2-hydroxybenzaldehyde or 2-hydroxy-3-methoxy-benzaldehyde while characterized with IR  and 1H, 13C NMR spectroscopy. All complexes have been studied with IR and microanalysis. Theoretical calculations of relevant complexes are done by using one of the hybrid density functional theories which is B3LYP method with GEN keyword.