Synthesis, characterization and spectroscopy of two new macrocyclic Schiff base Cd(II) complexes

In this paper we report the synthesis and characterization of two new mononuclear Cd(II) macrocyclic Schiff base complexes [CdL23pydfp(NO3)], (1), [CdL33pydfp(NO3)], . [1+1] cyclocondensation of L23py = N-(2-pyridylmethyl)-N-(3-aminpropyl)-1,3-diaminoethane, L33py = N-(3-pyridylmethyl)-N-(3-aminpropyl)-1,3-diaminopropane and 2,6-diformyl-4-methylphenol, dfp, in the presence of Cd(NO3)2.4H2O in equimolar ratios gave two new macrocylclic complexes. Resulting complexes were characterized by NMR, IR, mass spectroscopy and elemental analysis. Spectroscopy results show nitrogen and oxygen atoms of macrocyclic ligand with N4O donor set, one nitrate molecule (with two donor oxygen atoms) is coordinated to the Cd(II) center in each complex. So, the cadmium center is seven coordinated.