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 journalArticle

10 Citations (Scopus)


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 15T 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 languageEnglish
Pages (from-to)1-5
Number of pages5
JournalInorganica Chimica Acta
Issue number1
Publication statusPublished - 15 Mar 2012
Externally publishedYes


  • 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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  • Cite this

    Lavrenova, L. G., Virovets, A. V., Peresypkina, E. V., Strekalova, A. D., Piryazev, D. A., Daletsky, V. A., Sheludyakova, L. 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