Magnetic anomalies in polymeric chain complexes Cu(hfac)2 with spin-labeled dialkylpyrazoles

Magnetic anomalies in polymeric chain complexes Cu(hfac)2 with spin-labeled dialkylpyrazoles Full article

Journal

Journal of Structural Chemistry (Журнал структурной химии)
ISSN: 0022-4766

Output data

Year: 2022, Volume: 63, Number: 1, Pages: 87-99 Pages count : 13 DOI: 10.1134/s0022476622010103

Tags

nitroxide radicals, copper(II) bis(hexafluoroacetylacetonate), crystal structure, magnetic properties

Authors

Romanenko G.V. ¹ , Fokin S.V. ¹ , Chubakova E.T. ¹ , Bogomyakov A.S. ^1,2 , Ovcharenko V.I. ^1,2

Affiliations

1	Institute "International Tomography Center", Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2	Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia

The structures of hexafluoroacetylacetonate complexes of Cu(II)–Cu(hfac)2– with nitroxide radicals LR1/R2 , where R1 and R2 are alkyl substituents in the 1,3-pyrazole moiety are studied by X-ray crystallography. It is found that solid phases of all [Cu(hfac)2LR1/R2] are formed by polymeric chains whose common structural motif is a ditopic bridging coordination of paramagnetic ligands in the head-to-head fashion. The study of the temperature structure dynamics and the related change in the temperature dependence of the effective magnetic moment of the complex shows that changes in both R1 and R2 can substantially affect not only the possibility of the appearance of magnetic anomalies on the temperature curve of the effective magnetic moment but also its shape.

Romanenko G.V. , Fokin S.V. , Chubakova E.T. , Bogomyakov A.S. , Ovcharenko V.I.
Magnetic anomalies in polymeric chain complexes Cu(hfac)2 with spin-labeled dialkylpyrazoles
Journal of Structural Chemistry (Журнал структурной химии). 2022. V.63. N1. P.87-99. DOI: 10.1134/s0022476622010103 WOS Scopus

Романенко Г.В. , Фокин С.В. , Чубакова Э.Т. , Богомяков А.С. , Овчаренко В.И.
Магнитные аномалии в полимерно-цепочечных комплексах Cu(hfac)2 со спин-мечеными диалкилпиразолами
Journal of Structural Chemistry (Журнал структурной химии). 2022. Т.63. №1. С.48-60. DOI: 10.26902/JSC_id85865

Published print:

Feb 28, 2022

Web of science:	WOS:000762314800010
Scopus:	2-s2.0-85125617803

DB	Citing
Scopus	6
Web of science	6