Вид документа : Статья из журнала Шифр издания : 54/H 62 Автор(ы) : Ovcharenko V., Fokin S.V., Romanenko G. V., Bogomyakov A. S., Yachevskii D. S., Chizhov D. L., Charushin V. N., Chupakhin O. N. Заглавие : Heterospin complexes of fluorinated dinuclear Cu(II) and Mn(II) triketonates with nitroxides [Electronic resource] Место публикации : Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2010. - Vol. 59, № 6. - С. 1162-1174: il. Систем. требования: http://www.springerlink.com/content/d0v1616044t268u0/fulltext.pdf Примечания : Bibliogr. : p. 1174 (21 ref.). - 28.10.2011 г. ББК : 54 Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: Dinuclear heterospin complexes of CuII and MnII 1,1,1,7,7,7-hexafluoroheptane-2,4,6-trionates ([Cu2L2] and [Mn2L2], respectively) with nitronyl nitroxides 2-R-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazole-3-oxide 1-oxyls (NIT-R, R = H, Me, Et, m-C5H4N, m-NCC6H4, p-NCC6H4, PzMe) and the diradical NIT-Pz-(CH2)4-Pz-NIT (Pz is 1,4-pyrazolylene) were synthesized and structurally characterized. In the complexes under study, the CuII atom tends to have the square-pyramidal coordination environment, and the MnII atom is in an octahedral environment. The magnetochemical investigation of the compounds in the temperature range of 2–300 K showed that the antiferromagnetic exchange coupling dominates in the [Cu2L2] molecules, whereas this coupling in [Mn2L2] is manifested in the experimental plot µeff(T) at T 100 K. The magnetic properties of the heterospin complexes of [Cu2L2] with NIT-R are also determined by the intramatrix antiferromagnetic exchange coupling. For the complexes of [Mn2L2] with NIT-R, the coordination mode of the nitroxide plays a decisive role. Держатели документа: Центральная научная библиотека УрО РАН Доп.точки доступа: Ovcharenko, V.; Fokin, S.V.; Romanenko, G. V.; Bogomyakov, A. S.; Yachevskii, D. S.; Chizhov, D. L.; Чижов Дмитрий Леонидович; Charushin, V. N.; Chupakhin, O. N.