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Synthesis, identification and structural of some transition metal complexes with New heterocyclic azo-schiff base ligand derived from 4-amino antipyrine
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| Author:
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LAYLA MOHAMMED, ABID ALLAH MOHAMMED ALI, RAHEEM TAHIR MEHDI
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| Abstract:
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New azo –Schiff base ligand (6,6'-(((3Z,3'Z)-(((2E,4E)-3-((4-(trifluoro methyl) phenyl) diazenyl) pentane-2,4-diylidene) bis (azaneyl ylidene)) bis(1,5-dimethyl-2-phenyl-1,2-dihydro-3H-pyrazole-4-yl3-ylidene)) bis (azaneyl ylidene )) bis (3-methyl phenol) (TFAAMP)with chelate complexes of Co(II),Ni(II), Cu(II), Zn(II), Cd(II) , Hg(II) and Au(III) were prepared with metal salts in ethanol asolvent in 1:1 ratio (metal : ligand) . The azo-Schiff base ligand has been synthesized from condensation of (E) -2-(4-amino-1, 5-dimethyl-1H-pyrazol-3(2H)-ylidenamino)-5-methylphenol with 3- ((4-(trifluoromethyl diazenyl phenyl)) Pentone-2, 4-dione. The prepared azo Schiff ligand and its metal complexes where checked by different spectral technique as, C.H.N elemental analyses , Atomic absorption, magnetic moment measurements, molar conductance, FT-IR, UV-vis, 13C,1H-NMR and mass spectra studies. The data show that the complexes have the composition of 1:1[ M:L] chelates type and octahedral geometry with each of Co(II), Ni(II),Cu(II),Zn(II), Cd(II) and Hg(II) ions, except for Au(III) ion which has square planer geometry. All complexes that non electrolytes and no conductive species but Au(III) complex is 1:3 electrolyte nature. This can support the electrolytic nature of the metal complex.
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| Keyword:
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Synthesis, identification, azo-schiff base, metal complexes, spectral studies
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| EOI:
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| DOI:
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https://doi.org/10.31838/ijpr/2020.12.04.121
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