Synthesis, crystal structures and high-temperature spin-crossover of new inclusion compounds of iron(II) tris(pyrazol-1-yl)methane complex with p-sulfonatocalix[4]arene

Synthesis, crystal structures and high-temperature spin-crossover of new inclusion compounds of iron(II) tris(pyrazol-1-yl)methane complex with p-sulfonatocalix[4]arene Научная публикация

Журнал

Inorganica Chimica Acta
ISSN: 1873-3255 , E-ISSN: 0020-1693

Вых. Данные

Год: 2018, Том: 476, Страницы: 129-135 Страниц : 7 DOI: 10.1016/j.ica.2018.02.021

Ключевые слова

Synthesis, Fe(II) complex, Tris(pyrazol-1-yl)methane, Calix[4]arene, Magnetochemistry, Spectroscopy

Авторы

Shakirova O. ¹ , Kuratieva N. ^2,3 , Korotaev E. ² , Lavrenova L. ^2,3 , Ovsyannikov A. ⁴ , Antipin I. ⁴ , Solovieva S. ⁴

Организации

1	Komsomolsk-on-Amur State University, Lenin av. 27, Komsomolsk-on-Amur 681013, Russia
2	A.V. Nikolaev Institute of Inorganic Chemistry, Siberian Division, Russian Academy of Sciences, Akad. Lavrentiev ave. 3, Novosibirsk 630090, Russia
3	Novosibirsk State University, Pirogov str. 2, Novosibirsk 630090, Russia
4	A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Centre of the Russian Academy of Sciences, Arbuzov str. 8, Kazan 420088, Russia

Novel inclusion compounds based on iron(II) tris(pyrazol-1-yl)methane [Fe{HC(pz)3}2]2+ cation and p-sulfonatocalix[4]arene (C[4]AS) as a counterion of formulas [Fe{HC(pz)3}2]2(C[4]AS)·24H2O (II) and [Fe{HC(pz)3}2]5(C[4]AS)2·62H2O (III) have been synthesized in the solid state and studied by SC-XDR. The inclusion of [Fe{HC(pz)3}2]2+ cation into the macrocycle cavity with 1:1 host-guest stoichiometry in both cases was found. The magnetochemical investigation (μeff) of the dehydrated complex I of formula [Fe{HC(pz)3}2]5(C[4]AS)2 in the 78–500 K temperature range has shown a high-temperature 1A1 ⇔ 5T2 spin crossover (SCO) which was accompanied by thermochromism. The crossover temperature values for heating (Tc↑) and cooling (Tc↓) are equal to 390 K and 380 K, respectively.

Shakirova O. , Kuratieva N. , Korotaev E. , Lavrenova L. , Ovsyannikov A. , Antipin I. , Solovieva S.
Synthesis, crystal structures and high-temperature spin-crossover of new inclusion compounds of iron(II) tris(pyrazol-1-yl)methane complex with p-sulfonatocalix[4]arene
Inorganica Chimica Acta. 2018. V.476. P.129-135. DOI: 10.1016/j.ica.2018.02.021 Scopus OpenAlex

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