Abstract
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.
Similar content being viewed by others
REFERENCES
V. Ovcharenko. In: Stable Radicals / Ed. R. Hicks. Chichester, UK: John Wiley & Sons, Ltd, 2010, 461-506. https://doi.org/10.1002/9780470666975.ch13
V. Ovcharenko and E. Bagryanskaya. In: Spin-Crossover Mater / Ed. M. A. Halcrow. Oxford, UK: John Wiley & Sons Ltd, 2013, 239-280. https://doi.org/10.1002/9781118519301.ch9
N. A. Artiukhova, G. V. Romanenko, A. S. Bogomyakov, I. Y. Barskaya, S. L. Veber, M. V. Fedin, K. Y. Maryunina, K. Inoue, and V. I. Ovcharenko. J. Mater. Chem. C, 2016, 4, 11157-11163. https://doi.org/10.1039/C6TC03216H
S. V. Fokin, E. T. Kostina, E. V. Tretyakov, G. V. Romanenko, A. S. Bogomyakov, R. Z. Sagdeev, and V. I. Ovcharenko. Russ. Chem. Bull., 2013, 62, 661-671. https://doi.org/10.1007/s11172-013-0089-y
S. E. Tolstikov, N. A. Artiukhova, G. V. Romanenko, A. S. Bogomyakov, E. M. Zueva, I. Y. Barskaya, M. V. Fedin, K. Y. Maryunina, E. V. Tretyakov, R. Z. Sagdeev, and V. I. Ovcharenko. Polyhedron, 2015, 100, 132-138. https://doi.org/10.1016/j.poly.2015.07.029
V. I. Ovcharenko, S. V. Fokin, E. T. Kostina, G. V. Romanenko, A. S. Bogomyakov, and E. V. Tretyakov. Inorg. Chem., 2012, 51, 12188-12194. https://doi.org/10.1021/ic301328x
V. Ovcharenko, S. Fokin, E. Chubakova, G. Romanenko, A. Bogomyakov, Z. Dobrokhotova, N. Lukzen, V. Morozov, M. Petrova, M. Petrova, G. Levkovskaya, and R. Sagdeev. Inorg. Chem., 2016, 55, 5853-5861. https://doi.org/10.1021/acs.inorgchem.6b00140
K. Y. Maryunina, X. Zhang, S. Nishihara, K. Inoue, V. A. Morozov, G. V. Romanenko, and V. I. Ovcharenko. J. Mater. Chem. C, 2015, 3, 7788-7791. https://doi.org/10.1039/C5TC01005E
V. Ovcharenko, G. Romanenko, A. Polushkin, G. Letyagin, A. Bogomyakov, M. Fedin, K. Maryunina, S. Nishihara, K. Inoue, M. Petrova, V. Morozov, and E. Zueva. Inorg. Chem., 2019, 58, 9187-9194. https://doi.org/10.1021/acs.inorgchem.9b00815
E. T. Chubakova. Sintez, stroenie i svoistva geyerospinovykh kompleksov bis(geksaftoratsetilatsetonato) medi(II) s novymi pirazolil-zameshchennymi nitroksil’nymi radikalami (Synthesis, Structure, and Properties of Heterospin Complexes of bis(Hexafluoroacetylacetonato) Copper(II) with New Pyrasolyl-Substituted Nitroxide Radicals): Cand. (Chem.) Dissertation. Novosibirsk: Nikolaev Institute of Inorganic Chemistry, 2014. [In Russian]
V. I. Ovcharenko, S. V. Fokin, G. V. Romanenko, I. V. Korobkov, and P. Rey. Russ. Chem. Bull., 1999, 48, 1519-1525. https://doi.org/10.1007/BF02496404
G. V. Romanenko, S. V. Fokin, S. F. Vasilevskii, E. V. Tretyakov, Y. G. Shvedenkov, and V. I. Ovcharenko. Russ. J. Coord. Chem., 2001, 27, 360-367. https://doi.org/10.1023/A:1011354314831
V. Ovcharenko, S. Fokin, E. Chubakova, G. Romanenko, A. Bogomyakov, Z. Dobrokhotova, N. Lukzen, V. Morozov, M. M. Petrova, M. M. Petrova, E. Zueva, I. Rozentsveig, E. Rudyakova, G. Levkovskaya, and R. Sagdeev. Inorg. Chem., 2016, 55, 5853-5861. https://doi.org/10.1021/acs.inorgchem.6b00140
G. M. Sheldrick. Acta Crystallogr., Sect. A: Found. Adv., 2015, 71, 3-8. https://doi.org/10.1107/S2053273314026370
G. M. Sheldrick. Acta Crystallogr., Sect. C: Struct. Chem., 2015, 71, 3-8. https://doi.org/10.1107/S2053229614024218
E. V. Tretyakov and V. I. Ovcharenko. Russ. Chem. Rev., 2009, 78, 971-1012. https://doi.org/10.1070/RC2009v078n11ABEH004093
C. R. Groom, I. J. Bruno, M. P. Lightfoot, and S. C. Ward. Acta Crystallogr., Sect. B: Struct. Sci. Cryst. Eng. Mater., 2016, 72, 171-179. https://doi.org/10.1107/S2052520616003954
S. Fokin, V. Ovcharenko, G. Romanenko, and V. Ikorskii. Inorg. Chem., 2004, 43, 969-977. https://doi.org/10.1021/ic034964d
E. M. Zueva, E. R. Ryabykh, and A. M. Kuznetsov. Russ. Chem. Bull., 2009, 58, 1654-1662. https://doi.org/10.1007/s11172-009-0228-7
V. I. Ovcharenko, G. V. Romanenko, K. Y. Maryunina, A. S. Bogomyakov, and E. V. Gorelik. Inorg. Chem., 2008, 47, 9537-9552. https://doi.org/10.1021/ic8011074
V. A. Morozov, M. V. Petrova, and N. N. Lukzen. AIP Adv., 2015, 5, 087161. https://doi.org/10.1063/1.4929526
Funding
The work was supported by the Russian Science Foundation (grant No.17-13-01022) and RFBR in the synthesis of the compounds (grant No. 18-29-04002).
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
The authors declare that they have no conflict of interests.
Additional information
Russian Text © The Author(s), 2022, published in Zhurnal Strukturnoi Khimii, 2022, Vol. 63, No. 1, pp. 48-60.https://doi.org/10.26902/JSC_id85865
Rights and permissions
About this article
Cite this article
Romanenko, G.V., Fokin, S.V., Chubakova, E.T. et al. MAGNETIC ANOMALIES IN POLYMERIC CHAIN COMPLEXES Cu(hfac)2 WITH SPIN-LABELED DIALKYLPYRAZOLES. J Struct Chem 63, 87–99 (2022). https://doi.org/10.1134/S0022476622010103
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0022476622010103