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Synthesis and Structural Studies of Complexes of Cu (II), Ni (II) and Co (II) with 2-Hydroxy Chalcones

Khushal G. Karamunge and Yeshwant B. Vibhute

Complexes of Cu (II), Ni (II) and Co (II) with 1-(2'-hydroxy-3'-iodo-5'-chlorophenyl]-3-(3,4- methylenedioxyphenyl)-2-propen-1-one (L1), 1-(2'-hydroxy-3'-iodo-5'-bromophenyl]-3-(3,4-methylenedioxyphenyl)- 2-propen-1-one (L2) and 1-(2'-hydroxy-3'-bromo-4'-methyl-5'-chlorophenyl]-3-(3,4- methylenedioxyphenyl)-2-propen-1-one (L3) have been synthesized and characterized by analytical, molar conductivity, magnetic, IR, electronic spectra, TGA and 1H NMR spectra. Electronic spectral data suggest that all Cu (II) complexes are square planar and all Ni (II) and Co (II) complexes are having octahedral geometry.