Structure and Magnetic Properties of Solid Solutions of Molecular Magnetics Based on Ni(II) and Co(II) Complexes with Nitroxyl Radicals |
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| Authors: | E Yu Fursova V N Ikorskii G V Romanenko V A Reznikov Yu G Shvedenkov V I Ovcharenko |
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| Institution: | (1) International Tomographic Center, Siberian Branch, Russian Academy of Sciences, Novosibirsk;(2) Novosibirsk State University, Novosibirsk;(3) Institute of Organic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk |
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| Abstract: | Ni(II) and Co(II) complexes with deprotonated paramagnetic enaminoketones 4 (3 ,3,3trifluorine2oxopropylidene) 2,2,5,5tetramethyl3imidazolidine1oxyl (L) and 4(3,3,3trifluorine1chlorine2oxopropylidene)2,2,5,5tetramethyl3imidazolidine1oxyl (L1) and alcohols are shown to form continuous solid solutions NixCo1-xL2(C2H5OH)2 and NixCo1-xL2
1(CH3OH)2. Single crystal Xray diffraction analysis showed that concentration variation practically does not affect the structural characteristics of the solid solutions. Distinguishing features if the magnetic behavior of NixCo1-xL2 · (C2H5OH)2 and NixCo1-xL2
1(CH3OH)2 are the antiferromagnetic interaction of the moments of the nickel and cobalt sublattices inside the polymeric layers and the antiferromagnetic nature of interlayer interaction of the magnetic moments. |
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