Synthesis and Characterization of Mn(II), Fe(III), Co(II), Ni(II) and Cu(II) Complexes of β-Diketone

Narendra A. Bhise, Ashwini A. Agale, Suresh T. Gaikwad, Anjali S. Rajbhoj
2017 Asian Journal of Chemistry  
It is well known that β-diketones are also formed through Baker-Venkataraman transformation. In the present case, 3-bromo-2-methylbenzoic acid reacts with ortho-hydroxyacetophenone at room temperature to yield ester. Ester on further Baker-Venkataraman transformation yields 1,3-diketone (L) i.e. 1-(3-bromo-2-methylphenyl)-3-hydroxy-3-(2-hydroxyphenyl)prop-2-en-1-one. Five complexes of Mn(II), Fe(III), Co(II), Ni(II) and Cu(II) with bidentate ligand (L), have been synthesized from reaction of
more » ... from reaction of the ligand (L) with respective metal nitrates. β-diketone exhibits keto-enol tautomerism, their keto-enol tautomerism was studied in solution by IR and NMR spectroscopy. Due to enolization β-diketone acts as ligand and hence used to synthesized Mn(II), Fe(III), Co(II), NI(II) and Cu(II) complexes. The synthesized ligand has been characterized by elemental analysis, 1 H, 13 C NMR, LC-MS and FT-IR. The magnetic susceptibility and solution conductivity were also studied. The synthesized complexes were also studied antimicrobial screening.
doi:10.14233/ajchem.2017.20667 fatcat:6vsmqjzsd5hffbmgkr2qnytj5u