Synthesis, characterization and structural analysis of new copper(II) complexes incorporating a pyridoxal-semicarbazone ligand

The reaction between 3-hydroxy-5-hydroxymethyl-2-methyl-4-pyridinecarboxaldehyde semicarbazone (pyridoxal-semicarbazone or PLSC) and appropriate chloride, sulfate, nitrate or thiocyanate Cu(II) salts in water/alcohol mixtures resulted in the formation of new copper(II) complexes: [Cu(PLSC)Cl2] (1), [Cu(PLSC)(H2O)(SO4)]2·3H2O (2), [Cu2(PLSC)2(NCS)2](NCS)2 (3), [Cu(PLSC)(NO3)2(CH3OH)] (4) and [Cu(PLSC–2H]NH3·H2O (5). The complexes were characterized by elemental analysis, conductometric measurements and IR spectroscopy, while complexes 1, 2, 3 and 4 were further characterized by single crystal X-ray diffraction.

The synthesis, characterization and structural analysis of several Cu(II) complexes incorporating pyridoxal-semicarbazone (PLSC) are investigated.Figure optionsDownload as PowerPoint slide