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.

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

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

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10.1016/j.ica.2011.11.030

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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 › peer-review

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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.}",

year = "2012",

month = mar,

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doi = "10.1016/j.ica.2011.11.030",

language = "English",

volume = "382",

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AU - Lavrenova, Ludmila G.

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.

PY - 2012/3/15

Y1 - 2012/3/15

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.

KW - Crystal structure

KW - Iron(II)

KW - Magnetic properties

KW - Spin-crossover

KW - Thermochromism

KW - Tris(3)5-dimethylpyrazol-1-yl) methane

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