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Synthesis, spectroscopic, magnetic properties and MMX force field study of two imidazolate-bridged dinuclear copper(II) complexes

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Summary

Two new imidazolate-bridged dinuclear CuII complexes, Na[Cu2(L1)2(im)] and K[Cu2(L2)2(im)] (where H2L1=6-amino-1,3-dimethyl-5(2-carboxyphenyl)azouracil and H2L2=1,3-dimethyl-5(2-carboxyphenyl)azobarbituric acid) have been prepared and characterized by magnetic susceptibility and spectroscopic measurements. Both compounds exhibit the expected antiferromagnetic behaviour with 2J=−54.8 and −30.4 cm−1, respectively. Because of the lack of suitable crystals for single crystal X-ray analysis, we have calculated the lowest energy structures using a program based on the MMX force field. On the basis of the results, the magnitude of the magnetic interaction is discussed.

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Authors and Affiliations

  1. Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, 18071, Granada, Spain

    Enrique Colacio, Jose Manuel Dominguez Vera, Jose Maria Moreno & Jose Ruiz

  2. Division of Inorganic Chemistry, Department of Chemistry, University of Helsinki, Vuorikatu 20, SF-00100, Helsinki, Finland

    Markku R. Sundberg

Authors
  1. Enrique Colacio
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  2. Jose Manuel Dominguez Vera
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  3. Jose Maria Moreno
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  4. Jose Ruiz
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  5. Markku R. Sundberg
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TMC 2623

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Colacio, E., Vera, J.M.D., Moreno, J.M. et al. Synthesis, spectroscopic, magnetic properties and MMX force field study of two imidazolate-bridged dinuclear copper(II) complexes. Transition Met. Chem. 17, 397–400 (1992). https://doi.org/10.1007/BF02910716

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  • DOI: https://doi.org/10.1007/BF02910716

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