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Crystal Structures and Magnetic Properties of Cu(II) Complexes with Pyrazole‐Substituted Iminonitroxyl Radicals: New Trinuclear Heterospin Complexes

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Abstract

The paper describes the crystal structures and magnetic properties of complexes of copper(II) hexafluoroacetate (Cu(hfac)2) with stable pyrazole‐substituted iminonitroxyl radicals containing the pyrazole substitutuent in the second position of the 2‐imidazoline cycle (L). A new group of [Cu(hfac)2]3(L)2 complexes is found, in which L performs a bidentate‐bridge function due to the coordination of the imine N atoms of the pyrazole and imidazoline cycles. It is shown that in the solid complexes there are Cu2+—N = C—N—•O exchange routes with high‐energy ferromagnetic interactions (∼60–100 cm-1).

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Authors and Affiliations

  1. International Tomography Center, Siberian Branch, Russian Academy of Sciences, Novosibirsk

    S. V. Fokin, G. V. Romanenko, Yu. G. Shvedenkov, V. N. Ikorskii, S. F. Vasilevskii, E. V. Tret'yakov & V. I. Ovcharenko

  2. Institute of Chemical Kinetics and Combustion, Siberian Branch, Russian Academy of Sciences, Novosibirsk

    S. V. Fokin, G. V. Romanenko, Yu. G. Shvedenkov, V. N. Ikorskii, S. F. Vasilevskii, E. V. Tret'yakov & V. I. Ovcharenko

  3. Novosibirsk State University, Novosibirsk

    S. V. Fokin, G. V. Romanenko, Yu. G. Shvedenkov, V. N. Ikorskii, S. F. Vasilevskii, E. V. Tret'yakov & V. I. Ovcharenko

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  1. S. V. Fokin
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  2. G. V. Romanenko
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  3. Yu. G. Shvedenkov
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  4. V. N. Ikorskii
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  5. S. F. Vasilevskii
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  6. E. V. Tret'yakov
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  7. V. I. Ovcharenko
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Fokin, S.V., Romanenko, G.V., Shvedenkov, Y.G. et al. Crystal Structures and Magnetic Properties of Cu(II) Complexes with Pyrazole‐Substituted Iminonitroxyl Radicals: New Trinuclear Heterospin Complexes. Journal of Structural Chemistry 43, 828–834 (2002). https://doi.org/10.1023/A:1022833526039

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  • DOI: https://doi.org/10.1023/A:1022833526039

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