Copper(II) complexes of 4-formylantipyrine N(4)-substitutedthiosemicarbazones |
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Authors: | El-Sawaf Ayman K West Douglas X El-Saied Fathy A El-Bahnasawy Ramadan M |
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Institution: | (1) Department of Chemistry, Illinois State University, Normal, IL 61790-4160, USA;(2) Department of Chemistry, El-Menoufia University, Shebin El-Kom, Egypt |
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Abstract: | Copper(II) complexes between three 4-formylantipyrine N(4)-substituted thiosemicarbazones and four copper(II) salts have been prepared and characterized. 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. Both mononuclear and binuclear complexes have been formed with bridging ligands for the latter, being either chloro or acetato. The stoichiometries of the complexes are dependent on both the steric requirements of the thiosemicarbazone ligands and the electronic effects of their N(4)-substituents. |
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