Synthesis and Physicochemical Studies of Some 2-substituted-1-phenyl-1,3-butanedionato Nickel(II) and Copper(II) Complexes And Their 2,2?-Bipyridine and 1,10-Phenanthroline Adducts
- Helen Omoregie
- Joseph Woods
Abstract
The nickel(II) and copper(II) complexes of 2-substituted-1-phenyl-1,3-butanedione (2-R-bzacH, R=Cl, NO2) and
their 2,2′-bipyridine (bipy) and 1,10-phenanthroline (phen) adducts have been synthesized and characterized by
microanalysis, conductance, magnetic and spectral measurements. The conductivity measurements in nitromethane
indicate that the complexes are non-electrolytes while all the adducts are electrolytes except Ni(NO2-bzac)2bipy and
Cu(NO2-bzac)2phen which are non-electrolytes. The room temperature magnetic moments suggest that the
Cu(NO2-bzac)2 is a dimer while the visible absorption spectra of the compounds suggest plausible 4-, 5- and
6-coordinate geometry for these compounds. The infrared spectra of the complexes showed that lower frequency
shifts of varying magnitudes were observed in the carbonyl stretching frequencies on complexation.
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- DOI:10.5539/ijc.v3n1p207
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