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.



This work is licensed under a Creative Commons Attribution 4.0 License.
  • Issn(Print): 1916-9698
  • Issn(Onlne): 1916-9701
  • Started: 2009
  • Frequency: semiannual

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