Abstract
An iron(II) complex with tris(pyrazol-1-yl)methane (HC(Pz)3) of the composition [Fe(HC(Pz)3))2]·[Eu(dipic)2(Hdipic)]·2H2O, containing an outer-sphere complex anion, is synthesized. The compound is examined by single crystal and powder X-ray diffraction, UV-Vis and IR spectroscopies, and static magnetic susceptibility. The investigation of the temperature dependence χ(T) in the temperature range 80-470 K reveals that the polycrystalline phase of the compound undergoes spin-crossover 1А1 ⇔ 5Т2. The transition is accompanied by thermochromism (color change pink ⇔ white).
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