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Synthesis and structural studies of mixed-ligand complexes

Benzoylacetone andL-proline, 2-pyrrolidone-5-carboxylic acid orL-thioproline

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Abstract

Seven mixed-ligand complexes of cobalt(II), nickel(II) and copper(II) containing benzoylacetone andL-proline (HL1), 2-pyrrolidone-5-carboxylic acid (HL2) orL-thioproline (HL3) were prepared and characterized by means of elemental analysis, IR, electronic spectra, magnetic moment measurements and molar conductance. Both HL1 and HL2 coordinate with these metal ions in a neutral zwitterionic form (-NH2-CH-COO−), whereas HL3 coordinates as a monobasic chelating agent (O/N). The continuous thermochromism of the nickel(II) complex of HL1 (2) was attributed to a geometry change; it was investigated by DTA, TG, electronic spectra and X-ray powder diffraction techniques.

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Authors and Affiliations

  1. Department of Chemistry, Faculty of Science, Menoufia University, Shebin El-kom, Egypt

    A. M. Donia

  2. Department of Chemistry, Faculty of Science, Sana'a University, Sanaa, Yemen

    T. Y. Al-Ansi & M. Q. Othman

Authors
  1. A. M. Donia
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  2. T. Y. Al-Ansi
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  3. M. Q. Othman
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Donia, A.M., Al-Ansi, T.Y. & Othman, M.Q. Synthesis and structural studies of mixed-ligand complexes. Journal of Thermal Analysis 50, 857–865 (1997). https://doi.org/10.1007/BF01979215

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  • DOI: https://doi.org/10.1007/BF01979215

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