Stereo sensitivity of exchange interactions in NiII and CuII heterospin complexes with 5-formylpyrrolyl-substituted nitroxides


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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.

作者简介

E. Zueva

Kazan National Technological University

Email: Victor.Ovcharenko@tomo.nsc.ru
俄罗斯联邦, 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
俄罗斯联邦, 3a ul. Institutskaya, Novosibirsk, 630090

S. Fokin

International Tomography Center, Siberian Branch of the Russian Academy of Sciences

Email: Victor.Ovcharenko@tomo.nsc.ru
俄罗斯联邦, 3a ul. Institutskaya, Novosibirsk, 630090

G. Romanenko

International Tomography Center, Siberian Branch of the Russian Academy of Sciences

Email: Victor.Ovcharenko@tomo.nsc.ru
俄罗斯联邦, 3a ul. Institutskaya, Novosibirsk, 630090

A. Tkacheva

International Tomography Center, Siberian Branch of the Russian Academy of Sciences

Email: Victor.Ovcharenko@tomo.nsc.ru
俄罗斯联邦, 3a ul. Institutskaya, Novosibirsk, 630090

A. Bogomyakov

International Tomography Center, Siberian Branch of the Russian Academy of Sciences

Email: Victor.Ovcharenko@tomo.nsc.ru
俄罗斯联邦, 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
俄罗斯联邦, 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
俄罗斯联邦, 1 ul. Favorskogo, Irkutsk, 664033

R. Sagdeev

Kazan (Volga region) Federal University

Email: Victor.Ovcharenko@tomo.nsc.ru
俄罗斯联邦, 18 ul. Kremlevskaya, Kazan, 420008

V. Ovcharenko

International Tomography Center, Siberian Branch of the Russian Academy of Sciences

编辑信件的主要联系方式.
Email: Victor.Ovcharenko@tomo.nsc.ru
俄罗斯联邦, 3a ul. Institutskaya, Novosibirsk, 630090

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