2-Acetylbenzimidazole phthalazin-1-ylhydrazone and its complexes with transition metals |
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| Authors: | L. D. Popov S. I. Levchenkov I. N. Shcherbakov V. V. Minin E. B. Kaimakan Yu. P. Tupolova B. A. Kogan |
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| Affiliation: | 1.Southern Federal University,Rostov-on-Don,Russia;2.Southern Research Center,Russian Academy of Sciences,Rostov-on-Don,Russia;3.Kurnakov Institute of General and Inorganic Chemistry,Russian Academy of Sciences,Moscow,Russia |
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| Abstract: | 2-Acetylbenzimidazole phthalazin-1-ylhydrazone (H2L) and its complexes with Cu(II), Ni(II), Mn(II), Zn(II), Cd(II), and Fe(III) were synthesized. The structure of the complexes was determined on the basis of their elemental compositions, IR and ESR spectra, and thermogravimetric, conductometric, and magnetochemical studies. The dinuclear copper complex [CuL]2 was found to display strong antiferromagnetic exchange between the copper(II) ions. The ionization constants, energies of possible conformations of the hydrazone, geometric parameters of the dinuclear complex, and exchange parameters were calculated by quantum-chemical methods. |
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