The Cu(II) complexes with bis(pyrazole-1-yl)methane and its derivatives: Synthesis, crystal structure, and magnetic properties

E. V. Lider, O. L. Krivenko, E. V. Peresypkina, A. I. Smolentsev, Yu G. Shvedenkov, S. F. Vasilevskii, L. G. Lavrenova

Research output: Contribution to journal › Article

Abstract

The procedures for the synthesis of the Cu(II) complexes with bis(pyrazole-1-yl)methane (L¹), bis(3,5-dimethyl-4-bromopyrazole-1- yl)methane (L²), and bis(3,5-dimethyl-4-iodopyrazole-1-yl)methane (L³) of the composition Cu₂(L¹) ₂Br₄ (I), Cu₂(L²)₂Cl ₄ (II), Cu(L³)(NO₃)₂ (III), and Cu(L³)(H₂O)(NO₃)₂ • 2H ₂O (IV) were developed. The organic ligands in the above complexes are coordinated to Cu(II) in a bidentate cyclic type through the N(2), N(2′) atoms of the pyrazole rings. The molecular and crystal structures of L², L³, II, III, and IV were determined by X-ray diffraction. The study of the μ_eff(T) function in a temperature interval 2-300 K showed that compound I, which exhibited ferromagnetic exchange interactions in the chains, undergoes transition to antiferromagnetic state with weak ferromagnetism. The exchange antiferromagnetic interactions predominate in compound II.

Original language	English
Pages (from-to)	896-907
Number of pages	12
Journal	Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya
Volume	33
Issue number	12
DOIs	https://doi.org/10.1134/S1070328407120056
Publication status	Published - 1 Dec 2007
Externally published	Yes

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Chemistry(all)
Chemical Engineering(all)

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Lider, E. V., Krivenko, O. L., Peresypkina, E. V., Smolentsev, A. I., Shvedenkov, Y. G., Vasilevskii, S. F., & Lavrenova, L. G. (2007). The Cu(II) complexes with bis(pyrazole-1-yl)methane and its derivatives: Synthesis, crystal structure, and magnetic properties. Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya, 33(12), 896-907. https://doi.org/10.1134/S1070328407120056

The Cu(II) complexes with bis(pyrazole-1-yl)methane and its derivatives : Synthesis, crystal structure, and magnetic properties. / Lider, E. V.; Krivenko, O. L.; Peresypkina, E. V.; Smolentsev, A. I.; Shvedenkov, Yu G.; Vasilevskii, S. F.; Lavrenova, L. G.

In: Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya, Vol. 33, No. 12, 01.12.2007, p. 896-907.

Research output: Contribution to journal › Article

Lider, EV, Krivenko, OL, Peresypkina, EV, Smolentsev, AI, Shvedenkov, YG, Vasilevskii, SF & Lavrenova, LG 2007, 'The Cu(II) complexes with bis(pyrazole-1-yl)methane and its derivatives: Synthesis, crystal structure, and magnetic properties', Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya, vol. 33, no. 12, pp. 896-907. https://doi.org/10.1134/S1070328407120056

Lider, E. V. ; Krivenko, O. L. ; Peresypkina, E. V. ; Smolentsev, A. I. ; Shvedenkov, Yu G. ; Vasilevskii, S. F. ; Lavrenova, L. G. / The Cu(II) complexes with bis(pyrazole-1-yl)methane and its derivatives : Synthesis, crystal structure, and magnetic properties. In: Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya. 2007 ; Vol. 33, No. 12. pp. 896-907.

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abstract = "The procedures for the synthesis of the Cu(II) complexes with bis(pyrazole-1-yl)methane (L1), bis(3,5-dimethyl-4-bromopyrazole-1- yl)methane (L2), and bis(3,5-dimethyl-4-iodopyrazole-1-yl)methane (L3) of the composition Cu2(L1) 2Br4 (I), Cu2(L2)2Cl 4 (II), Cu(L3)(NO3)2 (III), and Cu(L3)(H2O)(NO3)2 • 2H 2O (IV) were developed. The organic ligands in the above complexes are coordinated to Cu(II) in a bidentate cyclic type through the N(2), N(2′) atoms of the pyrazole rings. The molecular and crystal structures of L2, L3, II, III, and IV were determined by X-ray diffraction. The study of the μeff(T) function in a temperature interval 2-300 K showed that compound I, which exhibited ferromagnetic exchange interactions in the chains, undergoes transition to antiferromagnetic state with weak ferromagnetism. The exchange antiferromagnetic interactions predominate in compound II.",

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AU - Peresypkina, E. V.

AU - Smolentsev, A. I.

AU - Shvedenkov, Yu G.

AU - Vasilevskii, S. F.

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10.1134/S1070328407120056