Spin crossover in heteroligand iron(II) complexes with iris(3,5-dimethylpyrazol-1-yl)methane

L. G. Lavrenova, A. D. Strekalova, A. S. Bogomyakov, E. V. Korotaev, A. V. Virovets, D. A. Piryazev, L. A. Sheludyakova, S. F. Vasilevskii

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Abstract

Heteroligand iron(II) complexes with tris(3,5-dimethylpyrazol-1-yl)methane (HC(3,5-Me₂Pz)₃) are synthesized. Along with this ligand, the internal coordination sphere of Fe(II) of the new complexes includes other nitrogen-containing heterocycles, in particular, tetrazole (Tz), pyrazole (Pz), 3,5-dimethylpyrazole (3,5-Me₂Pz), and 3-amino-4-ethoxycarbonylpyrazole (Ametcpz), as well as ions NCS^- or N(CN) ₂ ^-. Compounds [Fe(HC(3,5-Me₂Pz)₃)(Tz)₃](NO₃)₂ (I), [Fe(HC(3,5-Me₂Pz)₃)(Tz)₃](ClO₄)₂ (II), [Fe(HC(3,5-Me₂Pz)₃)(Pz)₃](NO₃)₂ (III), [Fe(HC(3,5-Me₂Pz)₃)(Aecpz)(NCS)₂] (IV), and [Fe(HC(3,5-Me₂Pz)₃)(3,5-Me₂Pz)(N(CN)₂)₂] · 0.5H₂O (V) are isolated. The study of the temperature dependence μ_eff(T) shows the spin crossover ¹ A ₁ ⁵ T ₂ accompanied by thermochromism (the color changes from white to pink) in complexes I, II, and IV. The molecular and crystal structures of complex V are determined by X-ray diffraction analysis (CIF file CCDC 994626).

Original language	English
Pages (from-to)	189-196
Number of pages	8
Journal	Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya
Volume	41
Issue number	3
DOIs	https://doi.org/10.1134/S1070328415030082
Publication status	Published - 1 Jan 2015
Externally published	Yes

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Chemistry(all)
Chemical Engineering(all)

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Lavrenova, L. G., Strekalova, A. D., Bogomyakov, A. S., Korotaev, E. V., Virovets, A. V., Piryazev, D. A., ... Vasilevskii, S. F. (2015). Spin crossover in heteroligand iron(II) complexes with iris(3,5-dimethylpyrazol-1-yl)methane. Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya, 41(3), 189-196. https://doi.org/10.1134/S1070328415030082

Spin crossover in heteroligand iron(II) complexes with iris(3,5-dimethylpyrazol-1-yl)methane. / Lavrenova, L. G.; Strekalova, A. D.; Bogomyakov, A. S.; Korotaev, E. V.; Virovets, A. V.; Piryazev, D. A.; Sheludyakova, L. A.; Vasilevskii, S. F.

In: Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya, Vol. 41, No. 3, 01.01.2015, p. 189-196.

Research output: Contribution to journal › Article

@article{21dba67fa5984c5bbef165e25cbc9048,

title = "Spin crossover in heteroligand iron(II) complexes with iris(3,5-dimethylpyrazol-1-yl)methane",

abstract = "Heteroligand iron(II) complexes with tris(3,5-dimethylpyrazol-1-yl)methane (HC(3,5-Me2Pz)3) are synthesized. Along with this ligand, the internal coordination sphere of Fe(II) of the new complexes includes other nitrogen-containing heterocycles, in particular, tetrazole (Tz), pyrazole (Pz), 3,5-dimethylpyrazole (3,5-Me2Pz), and 3-amino-4-ethoxycarbonylpyrazole (Ametcpz), as well as ions NCS- or N(CN) 2 -. Compounds [Fe(HC(3,5-Me2Pz)3)(Tz)3](NO3)2 (I), [Fe(HC(3,5-Me2Pz)3)(Tz)3](ClO4)2 (II), [Fe(HC(3,5-Me2Pz)3)(Pz)3](NO3)2 (III), [Fe(HC(3,5-Me2Pz)3)(Aecpz)(NCS)2] (IV), and [Fe(HC(3,5-Me2Pz)3)(3,5-Me2Pz)(N(CN)2)2] · 0.5H2O (V) are isolated. The study of the temperature dependence μeff(T) shows the spin crossover 1 A 1 5 T 2 accompanied by thermochromism (the color changes from white to pink) in complexes I, II, and IV. The molecular and crystal structures of complex V are determined by X-ray diffraction analysis (CIF file CCDC 994626).",

author = "Lavrenova, {L. G.} and Strekalova, {A. D.} and Bogomyakov, {A. S.} and Korotaev, {E. V.} and Virovets, {A. V.} and Piryazev, {D. A.} and Sheludyakova, {L. A.} and Vasilevskii, {S. F.}",

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T1 - Spin crossover in heteroligand iron(II) complexes with iris(3,5-dimethylpyrazol-1-yl)methane

AU - Lavrenova, L. G.

AU - Strekalova, A. D.

AU - Bogomyakov, A. S.

AU - Korotaev, E. V.

AU - Virovets, A. V.

AU - Piryazev, D. A.

AU - Sheludyakova, L. A.

AU - Vasilevskii, S. F.

PY - 2015/1/1

Y1 - 2015/1/1

N2 - Heteroligand iron(II) complexes with tris(3,5-dimethylpyrazol-1-yl)methane (HC(3,5-Me2Pz)3) are synthesized. Along with this ligand, the internal coordination sphere of Fe(II) of the new complexes includes other nitrogen-containing heterocycles, in particular, tetrazole (Tz), pyrazole (Pz), 3,5-dimethylpyrazole (3,5-Me2Pz), and 3-amino-4-ethoxycarbonylpyrazole (Ametcpz), as well as ions NCS- or N(CN) 2 -. Compounds [Fe(HC(3,5-Me2Pz)3)(Tz)3](NO3)2 (I), [Fe(HC(3,5-Me2Pz)3)(Tz)3](ClO4)2 (II), [Fe(HC(3,5-Me2Pz)3)(Pz)3](NO3)2 (III), [Fe(HC(3,5-Me2Pz)3)(Aecpz)(NCS)2] (IV), and [Fe(HC(3,5-Me2Pz)3)(3,5-Me2Pz)(N(CN)2)2] · 0.5H2O (V) are isolated. The study of the temperature dependence μeff(T) shows the spin crossover 1 A 1 5 T 2 accompanied by thermochromism (the color changes from white to pink) in complexes I, II, and IV. The molecular and crystal structures of complex V are determined by X-ray diffraction analysis (CIF file CCDC 994626).

AB - Heteroligand iron(II) complexes with tris(3,5-dimethylpyrazol-1-yl)methane (HC(3,5-Me2Pz)3) are synthesized. Along with this ligand, the internal coordination sphere of Fe(II) of the new complexes includes other nitrogen-containing heterocycles, in particular, tetrazole (Tz), pyrazole (Pz), 3,5-dimethylpyrazole (3,5-Me2Pz), and 3-amino-4-ethoxycarbonylpyrazole (Ametcpz), as well as ions NCS- or N(CN) 2 -. Compounds [Fe(HC(3,5-Me2Pz)3)(Tz)3](NO3)2 (I), [Fe(HC(3,5-Me2Pz)3)(Tz)3](ClO4)2 (II), [Fe(HC(3,5-Me2Pz)3)(Pz)3](NO3)2 (III), [Fe(HC(3,5-Me2Pz)3)(Aecpz)(NCS)2] (IV), and [Fe(HC(3,5-Me2Pz)3)(3,5-Me2Pz)(N(CN)2)2] · 0.5H2O (V) are isolated. The study of the temperature dependence μeff(T) shows the spin crossover 1 A 1 5 T 2 accompanied by thermochromism (the color changes from white to pink) in complexes I, II, and IV. The molecular and crystal structures of complex V are determined by X-ray diffraction analysis (CIF file CCDC 994626).

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DO - 10.1134/S1070328415030082

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