Crystal structures and magnetic properties of Cu(II) complexes with pyrazole-substituted iminonitroxyl radicals: New trinuclear heterospin complexes

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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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).

Original language	English
Pages (from-to)	828-834
Number of pages	7
Journal	Journal of Structural Chemistry
Volume	43
Issue number	5
DOIs	https://doi.org/10.1023/A:1022833526039
Publication status	Published - 1 Jan 2002
Externally published	Yes

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ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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Fokin, S. V., Romanenko, G. V., Shvedenkov, Y. G., Ikorskii, V. N., Vasilevskii, S. F., Tret'yakov, E. V., & Ovcharenko, V. I. (2002). Crystal structures and magnetic properties of Cu(II) complexes with pyrazole-substituted iminonitroxyl radicals: New trinuclear heterospin complexes. Journal of Structural Chemistry, 43(5), 828-834. https://doi.org/10.1023/A:1022833526039

Crystal structures and magnetic properties of Cu(II) complexes with pyrazole-substituted iminonitroxyl radicals : New trinuclear heterospin complexes. / Fokin, S. V.; Romanenko, G. V.; Shvedenkov, Yu G.; Ikorskii, V. N.; Vasilevskii, S. F.; Tret'yakov, E. V.; Ovcharenko, V. I.

In: Journal of Structural Chemistry, Vol. 43, No. 5, 01.01.2002, p. 828-834.

Research output: Contribution to journal › Article

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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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AU - Romanenko, G. V.

AU - Shvedenkov, Yu G.

AU - Ikorskii, V. N.

AU - Vasilevskii, S. F.

AU - Tret'yakov, E. V.

AU - Ovcharenko, V. I.

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AB - 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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10.1023/A:1022833526039