Spectral Characterization of Co(II),Ni(II)and Cu(II)complexes with 5-(4-Chlorophenyl)-3-(2-naphthyl)-1-phenyl-4,5-dihydro-1 H-pyrazole

摘要

The Co(II),Ni(II)and Cu(II)complexes of 5-(4-Chlorophenyl)-3-(2-naphthyl)-1-phenyl-4,5-dihydro-1 H-pyrazole were synthesized and characterized by elemental analysis,molar conductivity,infrared and electron paramagnetic resonance spectroscopies.The analytical data suggested the stoichiometric of 1:1 and 1:2[M:L]ratios.From the infrared spectra,it is concluded that the ligand is coordinated to the metal ions through nitrogen atoms of the ligand.The electron paramagnetic resonance spectral data suggested a square planar structure for Co(II)and Ni(II)complexes and an octahedral geometry for Cu(II)complex.