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Synthesis and spectral characterization of 1-phenylglyoxal bis{N(4)ethylthiosemicarbazone} and its metal complexes

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Abstract

Nickel(II), copper(II), zinc(II), and cadmium(II) complexes of 1-phenylglyoxal bis{N(4)-ethylthiosemicarbazone} have been synthesized and characterized spectroscopically. The bis(thiosemicarbazone) and its diamagnetic complexes have been characterized by their melting points, i.r., electronic, mass and 1H n.m.r. spectra. The four-coordinate copper(II) complex was also studied by e.s.r. spectroscopy. Upon coordination, the loss of a proton from each thiosemicarbazone moiety occurs, and the bis(thiosemicarbazone) coordinates to nickel(II) and copper(II) as a dianionic, tetradentate N2S2 ligand; but for zinc(II) and cadmium(II), mass spectral results suggest the formation of binuclear complexes.

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Authors and Affiliations

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

    Lily J. Ackerman, James W. Webb & Douglas X. West

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  1. Lily J. Ackerman
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  2. James W. Webb
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Ackerman, L.J., Webb, J.W. & West, D.X. Synthesis and spectral characterization of 1-phenylglyoxal bis{N(4)ethylthiosemicarbazone} and its metal complexes. Transition Metal Chemistry 24, 558–561 (1999). https://doi.org/10.1023/A:1006998903594

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