Health & Environmental Research Online (HERO)


Print Feedback Export to File
546101 
Journal Article 
Novel homo- and hetero-nuclear copper(II) complexes of tetradentate Schiff bases: Synthesis, characterization, solvent-extraction and catalase-like activity studies 
Dede, B; Karipcin, F; Cengiz, M 
2009 
Yes 
Journal of Hazardous Materials
ISSN: 0304-3894
EISSN: 1873-3336 
Elsevier BV 
163 
2-3 (30 Apr. 2009) 
2-3 
English 
WOS:000264160000090 
Twelve homo- and hetero-nuclear copper(II) complexes of tetradentate Schiff base ligands containing N sub(4) donor sets have been prepared by employing several steps. The characterization and nature of bonding of the complexes have been deduced from elemental analysis, FT-IR, molar conductivity, magnetic moment measurements and thermal analysis. The three Schiff base ligands were further identified using super(1)H and super(1) super(3)C NMR spectra. All copper(II) complexes are 1:2 electrolytes as shown by their molar conductivities ( Lambda sub(M)) in DMF and paramagnetic. The subnormal magnetic moment values of the di- and tri-nuclear complexes explained by a very strong anti-ferromagnetic interaction. The extraction ability of the ligands has been examined by the liquid-liquid extraction of selected transition metal (Mn super(2) super(+), Co super(2) super(+), Ni super(2) super(+), Cu super(2) super(+), Zn super(2) super(+), Pb super(2) super(+), Cd super(2) super(+), Hg super(2) super(+)) cations. The ligands show strong binding ability toward copper(II) ion. Furthermore the homo- and hetero-nuclear copper(II) complexes were each tested for their ability to catalyse the disproportionation of hydrogen peroxide in the presence of the added base imidazole. 
Article Subject Terms: Cations; Copper; Hydrogen peroxide; Lead; N.M.R.; Transition metals; Zinc; imidazole; X 24390 Radioactive Materials