Spin-crossover in the complex of iron(II) nitrate with tris(3,5- dimethylpyrazol-1-yl)methane

Ludmila G. Lavrenova, Alexander V. Virovets, Eugenia V. Peresypkina, Anna D. Strekalova, Dmitry A. Piryazev, Vasiliy A. Daletsky, Liliya A. Sheludyakova, Sergey F. Vasilevsky

Research output: Contribution to journal › Article

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Abstract

Novel coordination compound [Fe(HC(3,5-Mepz) ₃) ₂](NO ₃) ₂ is obtained by a reaction of Fe(NO ₃) ₂ with tris(3,5-dimethylpyrazol-1-yl)methane. The compound is characterized with magnetic susceptibility method, electronic (diffuse reflection) and IR spectroscopy and powder diffraction. According to temperature dependence μ _eff(T) the compound possesses spin-crossover ¹A ₁ ⇔ ⁵T ₂ with hysteresis (T _c↑ = 231, T _c↓ = 227 K) accompanied by thermochromism (pink ⇔ colorless). A crystal structure of the compound was determined just before (T = 240 K, Fe ^HS-N 2.14-2.18 ) and after (T = 123 K, Fe ^LS-N 1.97-1.99 ) spin phase transition.

Original language	English
Pages (from-to)	1-5
Number of pages	5
Journal	Inorganica Chimica Acta
Volume	382
Issue number	1
DOIs	https://doi.org/10.1016/j.ica.2011.11.030
Publication status	Published - 15 Mar 2012
Externally published	Yes

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Keywords

Crystal structure
Iron(II)
Magnetic properties
Spin-crossover
Thermochromism
Tris(3)5-dimethylpyrazol-1-yl) methane

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

Cite this

Lavrenova, L. G., Virovets, A. V., Peresypkina, E. V., Strekalova, A. D., Piryazev, D. A., Daletsky, V. A., ... Vasilevsky, S. F. (2012). Spin-crossover in the complex of iron(II) nitrate with tris(3,5- dimethylpyrazol-1-yl)methane. Inorganica Chimica Acta, 382(1), 1-5. https://doi.org/10.1016/j.ica.2011.11.030

Spin-crossover in the complex of iron(II) nitrate with tris(3,5- dimethylpyrazol-1-yl)methane. / Lavrenova, Ludmila G.; Virovets, Alexander V.; Peresypkina, Eugenia V.; Strekalova, Anna D.; Piryazev, Dmitry A.; Daletsky, Vasiliy A.; Sheludyakova, Liliya A.; Vasilevsky, Sergey F.

In: Inorganica Chimica Acta, Vol. 382, No. 1, 15.03.2012, p. 1-5.

Research output: Contribution to journal › Article

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title = "Spin-crossover in the complex of iron(II) nitrate with tris(3,5- dimethylpyrazol-1-yl)methane",

abstract = "Novel coordination compound [Fe(HC(3,5-Mepz) 3) 2](NO 3) 2 is obtained by a reaction of Fe(NO 3) 2 with tris(3,5-dimethylpyrazol-1-yl)methane. The compound is characterized with magnetic susceptibility method, electronic (diffuse reflection) and IR spectroscopy and powder diffraction. According to temperature dependence μ eff(T) the compound possesses spin-crossover 1A 1 ⇔ 5T 2 with hysteresis (T c↑ = 231, T c↓ = 227 K) accompanied by thermochromism (pink ⇔ colorless). A crystal structure of the compound was determined just before (T = 240 K, Fe HS-N 2.14-2.18 ) and after (T = 123 K, Fe LS-N 1.97-1.99 ) spin phase transition.",

keywords = "Crystal structure, Iron(II), Magnetic properties, Spin-crossover, Thermochromism, Tris(3)5-dimethylpyrazol-1-yl) methane",

author = "Lavrenova, {Ludmila G.} and Virovets, {Alexander V.} and Peresypkina, {Eugenia V.} and Strekalova, {Anna D.} and Piryazev, {Dmitry A.} and Daletsky, {Vasiliy A.} and Sheludyakova, {Liliya A.} and Vasilevsky, {Sergey F.}",

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AU - Virovets, Alexander V.

AU - Peresypkina, Eugenia V.

AU - Strekalova, Anna D.

AU - Piryazev, Dmitry A.

AU - Daletsky, Vasiliy A.

AU - Sheludyakova, Liliya A.

AU - Vasilevsky, Sergey F.

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N2 - Novel coordination compound [Fe(HC(3,5-Mepz) 3) 2](NO 3) 2 is obtained by a reaction of Fe(NO 3) 2 with tris(3,5-dimethylpyrazol-1-yl)methane. The compound is characterized with magnetic susceptibility method, electronic (diffuse reflection) and IR spectroscopy and powder diffraction. According to temperature dependence μ eff(T) the compound possesses spin-crossover 1A 1 ⇔ 5T 2 with hysteresis (T c↑ = 231, T c↓ = 227 K) accompanied by thermochromism (pink ⇔ colorless). A crystal structure of the compound was determined just before (T = 240 K, Fe HS-N 2.14-2.18 ) and after (T = 123 K, Fe LS-N 1.97-1.99 ) spin phase transition.

AB - Novel coordination compound [Fe(HC(3,5-Mepz) 3) 2](NO 3) 2 is obtained by a reaction of Fe(NO 3) 2 with tris(3,5-dimethylpyrazol-1-yl)methane. The compound is characterized with magnetic susceptibility method, electronic (diffuse reflection) and IR spectroscopy and powder diffraction. According to temperature dependence μ eff(T) the compound possesses spin-crossover 1A 1 ⇔ 5T 2 with hysteresis (T c↑ = 231, T c↓ = 227 K) accompanied by thermochromism (pink ⇔ colorless). A crystal structure of the compound was determined just before (T = 240 K, Fe HS-N 2.14-2.18 ) and after (T = 123 K, Fe LS-N 1.97-1.99 ) spin phase transition.

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10.1016/j.ica.2011.11.030