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Synthesis and Physico-Chemical Properties of Transition Metal Complexes with 2,4-Dichloro-6-{(hydroxyimino) [1-(4-methylphenyl)-1H-Pyrazol-4-yl] methyl} Phenol

Dhokale NT, Karale BK and Nagawade AV

Four new complexes were synthesized by the reaction of 2,4-dichloro-6-{(hydroxyimino) [1-(4-methylphenyl)-1H-pyrazol-4-yl] methyl} phenol ligand with transition metal ions Manganese (Mn2+, Complex-I), Iron (Fe2+, Complex-II), Cobalt (Co2+, Complex-III) and Nickel (Ni2, Complex-IV). The metal complexes have been characterized with the help of elemental analysis, IR spectroscopy, UV-Visible, thermal analysis and molar conductance measurements. The elemental analysis data exhibited the formation of complex with 2:1 (L:M) ratio. The Schiff bases are bidentate coordinating through the imine nitrogen and phenolic oxygen of salicyloyl pyrazoleoximes. Based on analytical and spectral data, four-coordinate geometry was assigned for all complexes. The electronic absorption spectra suggest the square planer geometry for the complexes. The molar conductivity data showed the non-electrolytic nature of the complexes.