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Copper(II) complexes of 2-aminoacetophenone N(4)-substituted thiosemicarbazones

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Abstract

Mononuclear copper(II) complexes with 2-aminoacetophenone thiosemicarbazone and three N(4)-substituted thiosemicarbazones have been prepared in ethanolic solution and characterized by physical and spectral methods. I.r., electronic and e.s.r. spectra of the complexes, as well as i.r., electronic, and 1H- and 13C-n.m.r. spectra of the thiosemicarbazones, have been obtained. The 2-aminoacetophenone thiosemicarbazones coordinate as neutral ligands via the thiosemicarbazone moiety's azomethine nitrogen and thione sulfur, except for the piperidylthiosemicarbazone, which undergoes deprotonation and coordinates via the thiolato sulfur, as well as through the azomethine nitrogen. Complexes formed in the presence of triethylamine also form complexes with the anionic form of these thiosemicarbazones.

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Authors and Affiliations

  1. Department of Chemistry, Illinois State University, Normal, IL, 61790-4160, USA

    Douglas X. West & Amal A. Nassar

  2. Department of Chemistry, El-Menoufia University, Shebin El-Kom, Egypt

    Fathy A. El-Saied & Mohamed I. Ayad

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  1. Douglas X. West
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  2. Amal A. Nassar
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  3. Fathy A. El-Saied
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  4. Mohamed I. Ayad
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West, D.X., Nassar, A.A., El-Saied, F.A. et al. Copper(II) complexes of 2-aminoacetophenone N(4)-substituted thiosemicarbazones. Transition Metal Chemistry 23, 321–325 (1998). https://doi.org/10.1023/A:1006957325074

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