Stereo sensitivity of exchange interactions in NiII and CuII heterospin complexes with 5-formylpyrrolyl-substituted nitroxides
- Autores: Zueva E.1, Tretyakov E.2, Fokin S.2, Romanenko G.2, Tkacheva A.2, Bogomyakov A.2, Petrova O.3, Trofimov B.3, Sagdeev R.4, Ovcharenko V.2
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Afiliações:
- Kazan National Technological University
- International Tomography Center, Siberian Branch of the Russian Academy of Sciences
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences
- Kazan (Volga region) Federal University
- Edição: Volume 65, Nº 3 (2016)
- Páginas: 666-674
- Seção: Full Articles
- URL: https://journals.rcsi.science/1066-5285/article/view/237439
- DOI: https://doi.org/10.1007/s11172-016-1353-8
- ID: 237439
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Resumo
5-Formylpyrrolyl-substituted nitronyl and imino nitroxide radicals HL1 and HL2 were synthesized. Their solid phases are formed by packing pairs of the molecules. In the {HL1...HL1} pairs, the dominant interaction is the ferromagnetic exchange with J/kB = 8.8 K (Hamiltonian \(H = 2J\left( {\overrightarrow {{s_1}} \overrightarrow {{s_2}} } \right)\)). The ferromagnetic exchange occurs also in the heterospin molecules [Ni(L1)2], [Cu(L1)2], and [Ni(L2)2(MeOH)2]. In the complexes [Ni(L1)2] and [Cu(L1)2], a small change in the mutual orientation of the coordinated ligands has a considerable effect on the value and the sign of the energy of exchange interactions between the unpaired electrons of the metal ion and paramagnetic ligands.
Sobre autores
E. Zueva
Kazan National Technological University
Email: Victor.Ovcharenko@tomo.nsc.ru
Rússia, 68 ul. K. Marksa, Kazan, 420015
E. Tretyakov
International Tomography Center, Siberian Branch of the Russian Academy of Sciences
Email: Victor.Ovcharenko@tomo.nsc.ru
Rússia, 3a ul. Institutskaya, Novosibirsk, 630090
S. Fokin
International Tomography Center, Siberian Branch of the Russian Academy of Sciences
Email: Victor.Ovcharenko@tomo.nsc.ru
Rússia, 3a ul. Institutskaya, Novosibirsk, 630090
G. Romanenko
International Tomography Center, Siberian Branch of the Russian Academy of Sciences
Email: Victor.Ovcharenko@tomo.nsc.ru
Rússia, 3a ul. Institutskaya, Novosibirsk, 630090
A. Tkacheva
International Tomography Center, Siberian Branch of the Russian Academy of Sciences
Email: Victor.Ovcharenko@tomo.nsc.ru
Rússia, 3a ul. Institutskaya, Novosibirsk, 630090
A. Bogomyakov
International Tomography Center, Siberian Branch of the Russian Academy of Sciences
Email: Victor.Ovcharenko@tomo.nsc.ru
Rússia, 3a ul. Institutskaya, Novosibirsk, 630090
O. Petrova
A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences
Email: Victor.Ovcharenko@tomo.nsc.ru
Rússia, 1 ul. Favorskogo, Irkutsk, 664033
B. Trofimov
A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences
Email: Victor.Ovcharenko@tomo.nsc.ru
Rússia, 1 ul. Favorskogo, Irkutsk, 664033
R. Sagdeev
Kazan (Volga region) Federal University
Email: Victor.Ovcharenko@tomo.nsc.ru
Rússia, 18 ul. Kremlevskaya, Kazan, 420008
V. Ovcharenko
International Tomography Center, Siberian Branch of the Russian Academy of Sciences
Autor responsável pela correspondência
Email: Victor.Ovcharenko@tomo.nsc.ru
Rússia, 3a ul. Institutskaya, Novosibirsk, 630090