New Coordinative Compounds of Mn(II) and Cu(II) Using as Ligand N-hydroxy-succinimide

This paper deals with synthesis and characterization of new coordinative compounds of Mn(II) and Cu(II) using as ligand N-hydroxy-succinimide. Synthesis of the new coordinative compounds was carried out at room temperature, under 45 minutes stirring of two 10-2 M solutions of each reagent (Ligand N-hydroxysuccinimide and respectively Mn(II) or Cu(II) ions) in molar ratio 1:1 and corresponding 2:1 (ligand : central atom). The brown crystals for copper (II) complexes and orange to yellow for manganese (II) complexes were obtained by slow evaporation at room temperature. The characterization of obtained complex compounds was performed using the EDAX elemental chemical analysis, thermogravimetry, IR absorption spectroscopy, ESR spectroscopy and X-ray diffraction. To determine the molar ratio ligand : central atom were used methods as pH-metry, conductometry and the UV-VIS absorption spectroscopy. The stability constants for new obtained compounds, in aqueous medium, were determined using molar ratio method (J.H.Yoe and A.L.Jones). The new coordinative compounds crystallize in triclinic system.