Abstract
The synthesis, characterization and structural analysis of several Cu(II) complexes incorporating pyridoxal-semicarbazone (PLSC) are investigated.
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)Cl
2] (
1), [Cu(PLSC)(H
2O)(SO
4)]
2·3H
2O (
2), [Cu
2(PLSC)
2(NCS)
2](NCS)
2 (
3), [Cu(PLSC)(NO
3)
2(CH
3OH)] (
4) and [Cu(PLSC–2H]NH
3·H
2O (
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.