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

Olga Shakirova, Natalia Kuratieva, Evgeniy Korotaev, Lyudmila Lavrenova, Alexander Ovsyannikov, Igor Antipin, Svetlana Solovieva

Результат исследования: Научные публикации в периодических изданияхстатья

1 Цитирования (Scopus)

Аннотация

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 1A15T2 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.

Язык оригиналаанглийский
Страницы (с-по)129-135
Число страниц7
ЖурналInorganica Chimica Acta
Том476
DOI
СостояниеОпубликовано - 1 мая 2018

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