Ferro- and antiferromagnetic interactions in polymeric and molecular complexes of Cu(hfac)(2) with 1-oxoazin-2-yl-substituted nitronyl nitroxides / Chupakhin Oleg N.,Tretyakov Evgeny V.,Utepova Irina A.,Varaksin Mikhail V.,Romanenko Galina V.,Bogomyakov Artem S.,Veber Sergey L.,Ovcharenko Victor I. // POLYHEDRON. - 2011. - V. 30, l. 4. - P. 647-653.

ISSN/EISSN:

0277-5387 / нет данных

Type:

Article

Abstract:

Solid heterospin compounds based on Cu(hfac)(2) complexes with a new group of nitronyl nitroxides bearing different azine-N-oxide substituents at position 2 of the 2-imidazoline ring (L-n) were studied. The major factor responsible for the change in the magnetic characteristics of the {[}Cu(hfac)(2)L-1] complex with triazine nitronyl nitroxide with temperature was shown to be the specific pairwise packing of heterospin molecules with the dominant antiferromagnetic exchange between the radical fragments of adjacent molecules. For complexes of Cu(hfac)(2) with 1-oxoazin-2-yl-substituted nitronyl nitroxides L-2 and L-4, 7-membered metallocycles were obtained, although they form rarely. It was shown that polymer chains formed in the solid complex with spin-labeled pyrazine-N-oxide {[}(Cu(hfac)(2))(3)(L-3)(2)] due to the cross-linking of ((Cu(hfac)(2))(2)(L-3)(2)) binuclear fragments via the bridging {[}Cu(hfac)(2)]. (C) 2010 Elsevier Ltd. All rights reserved.

Author keywords:

Nitronyl nitroxides; Azine-N-oxides; Copper complexes PYRAZOLYL-SUBSTITUTED NITRONYL; CU(II) BISCHELATE COMPLEXES; TRANSITION-METAL DICATIONS; AB-INITIO ANALYSIS; MAGNETIC-PROPERTIES; COPPER(II) COMPLEXES; CRYSTAL-STRUCTURE; 3-IMIDAZOLINE NITROXIDES; COORDINATION-COMPLEXES; EXCHANGE INTERACTION

DOI:

10.1016/j.poly.2010.11.029

Web of Science ID:

ISI:000288524000014

Соавторы в МНС:

Другие поля

Поле	Значение
Month	MAR 11
Publisher	PERGAMON-ELSEVIER SCIENCE LTD
Address	THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Language	English
Keywords-Plus	PYRAZOLYL-SUBSTITUTED NITRONYL; CU(II) BISCHELATE COMPLEXES; TRANSITION-METAL DICATIONS; AB-INITIO ANALYSIS; MAGNETIC-PROPERTIES; COPPER(II) COMPLEXES; CRYSTAL-STRUCTURE; 3-IMIDAZOLINE NITROXIDES; COORDINATION-COMPLEXES; EXCHANGE INTERACTION
Research-Areas	Chemistry; Crystallography
Web-of-Science-Categories	Chemistry, Inorganic \& Nuclear; Crystallography
Author-Email	Victor.Ovcharenko@tomo.nsc.ru
ResearcherID-Numbers	Tretyakov, Evgeny/A-7163-2014 Bogomyakov, Artem/A-7079-2014 Veber, Sergey/E-9276-2014 Varaksin, Mikhail/J-5007-2015
ORCID-Numbers	Tretyakov, Evgeny/0000-0003-1540-7033 Bogomyakov, Artem/0000-0002-6918-5459 Veber, Sergey/0000-0002-5445-3713 Varaksin, Mikhail/0000-0002-7997-3686 Romanenko, Galina/0000-0001-8852-2759
Funding-Acknowledgement	Russian Foundation for Basic Research {[}08-03-00025, 08-03-00326, 09-0300091, 09-03-12108, 10-03-00756, MK-4268.2010.3]; Orekhovich Research Institute of Biomedical Chemistry; US Civilian Research and Development Foundation {[}REC-005]; Ministry of Science and Education {[}NSh-65261.2010.3]; Siberian and Ural Branches of the Russian Academy of Sciences
Funding-Text	This work was financially supported by the Russian Foundation for Basic Research (Grant Nos. 08-03-00025, 08-03-00326, 09-0300091, 09-03-12108, and 10-03-00756), RF Presidential grant (MK-4268.2010.3), V.N. Orekhovich Research Institute of Biomedical Chemistry, US Civilian Research and Development Foundation (REC-005), the Ministry of Science and Education (Grant for Leading Scientific Schools, Project NSh-65261.2010.3), and the Siberian and Ural Branches of the Russian Academy of Sciences.
Number-of-Cited-References	39
Usage-Count-Since-2013	17
Journal-ISO	Polyhedron
Doc-Delivery-Number	736VV