Heterospin complexes based on dinuclear Cu-II triketonate and nitroxides / Ovcharenko V. I.,Fokin S. V.,Romanenko G. V.,Ikorskii V. N.,Sagdeev R. Z.,Yachevskii D. S.,Chizhov D. L.,Charushin V. N. // RUSSIAN CHEMICAL BULLETIN. - 2006. - V. 55, l. 11. - P. 1904-1908.

ISSN/EISSN:

1066-5285 / нет данных

Type:

Article

Abstract:

Heterospin complexes of bis(mu(2)-1,1,2,2,8,8,9,9-octafluorononane-3,5,7-trionato)dicopper(II) ({[}Cu2L2]) with nitronyl nitroxides 2-(1-methyl-1H-pyrazol-4-yl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazol e-1-oxyl 3-oxide (2) and 4,4,5,5-tetramethyl-2-(3-pyridinyl)-4,5-dihydro-1H-imidazole-1-oxyl 3-oxide (1) were synthesized and structurally characterized. Crystals of the complexes are formed by the discrete bis{[}1-methyl-4-(4,4,5,5-tetramethyl-3-oxide-1-oxyl-4,5-dihydro-1H-imid azol-2-yl)-1H-pyrazole]-bis (mu(2)-1,1,2,2,8,8,9,9-octafluorononane-3,5,7-trionato)dicopper(II) etherate (3) and bis{[}3-(4,4,5,5-tetramethyl-3-oxide-1-oxyl-4,5-dihydro-1H-imidazol-2-yl )pyridine]-bis (mu(2)-1,1,2,2,8,8,9,9-octafluorononane-3,5,7-trionato)dicopper(II) (4) molecules. Each Cu atom of the dinuclear chelate fragment coordinates one paramagnetic ligand through the N atom of the pyrazole or pyridine fragment, respectively. In complex 3, the paramagnetic ligands are located on one side of the plane of the chelate fragment, whereas the ligands in complex 4 are located above and below the plane of the chelate fragment. The magnetic properties of complexes 3 and 4 are determined by dominant antiferromagnetic exchange interactions between the unpaired electrons of the Cu-II atoms in the dinuclear Cu2L2 moiety.

Author keywords:

copper(n); metal triketonates; nitroxides; X-ray diffraction study; magnetic properties COPPER(II) COMPLEXES; MAGNETIC-PROPERTIES; SPIN TRANSITIONS; EXCHANGE

DOI:

10.1007/s11172-006-0531-5

Web of Science ID:

ISI:000245501600004

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	NOV
Publisher	SPRINGER
Address	233 SPRING STREET, NEW YORK, NY 10013 USA
Language	English
Keywords-Plus	COPPER(II) COMPLEXES; MAGNETIC-PROPERTIES; SPIN TRANSITIONS; EXCHANGE
Research-Areas	Chemistry
Web-of-Science-Categories	Chemistry, Multidisciplinary
Author-Email	Victor.Ovcharenko@tomo.nsc.ru charushin@prm.uran.ru
ResearcherID-Numbers	Fokin, Sergey/A-7051-2014
ORCID-Numbers	Romanenko, Galina/0000-0001-8852-2759
Number-of-Cited-References	15
Usage-Count-Since-2013	1
Journal-ISO	Russ. Chem. Bull.
Doc-Delivery-Number	154IY