Heterospin complexes of fluorinated dinuclear Cu-II and Mn-II triketonates with nitroxides / Ovcharenko V. I.,Fokin S. V.,Romanenko G. V.,Bogomyakov A. S.,Yachevskii D. S.,Chizhov D. L.,Charushin V. N.,Chupakhin O. N. // RUSSIAN CHEMICAL BULLETIN. - 2010. - V. 59, l. 6. - P. 1162-1174.

ISSN/EISSN:

1066-5285 / нет данных

Type:

Article

Abstract:

Dinuclear heterospin complexes of Cu-II and Mn-II 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 mu(eff)(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.

Author keywords:

copper(II); manganese(II); metal triketonates; nitroxides; X-ray diffraction study; magnetic properties MAGNETIC-PROPERTIES; SPIN TRANSITIONS; COPPER(II) COMPLEXES; EXCHANGE INTERACTION; NITRONYL NITROXIDE; CLUSTER; TRIADS; EPR

DOI:

10.1007/s11172-010-0219-8

Web of Science ID:

ISI:000284847800011

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	JUN
Publisher	SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013 USA
Language	English
Keywords-Plus	MAGNETIC-PROPERTIES; SPIN TRANSITIONS; COPPER(II) COMPLEXES; EXCHANGE INTERACTION; NITRONYL NITROXIDE; CLUSTER; TRIADS; EPR
Research-Areas	Chemistry
Web-of-Science-Categories	Chemistry, Multidisciplinary
Author-Email	Victor.Ovcharenko@tomo.nsc.ru charushin@ios.uran.ru
ResearcherID-Numbers	Bogomyakov, Artem/A-7079-2014 Fokin, Sergey/A-7051-2014
ORCID-Numbers	Bogomyakov, Artem/0000-0002-6918-5459 Romanenko, Galina/0000-0001-8852-2759
Funding-Acknowledgement	Russian Foundation for Basic Research {[}09-03-00091, 08-03-00025, 09-03-12108]; Presidium of the Russian Academy of Sciences; Division of Chemistry and Materials Science of the Russian Academy of Sciences; Ural and Siberian Branches of the Russian Academy of Sciences
Funding-Text	This study was financially supported by the Russian Foundation for Basic Research (Project Nos 09-03-00091, 08-03-00025, and 09-03-12108), the Presidium of the Russian Academy of Sciences, the Division of Chemistry and Materials Science of the Russian Academy of Sciences, and the Ural and Siberian Branches of the Russian Academy of Sciences.
Number-of-Cited-References	21
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	5
Journal-ISO	Russ. Chem. Bull.
Doc-Delivery-Number	688KI