Synthesis, Crystal Structure and Magnetic Properties of an Iron(III) Pyridine-2,3,5,6-tetracarboxylate Complex
نویسندگان
چکیده
A new pyridine-2,3,5,6-tetracarboxylato-bridged Fe(III) complex with a K+ counter ion, K[Fe(H2pdtc)2] (1), was prepared from the reaction of Fe2(SO4)3 · 7H2O, pyridine-2,3,5,6-tetracarboxylic acid and KOH under ambient conditions. The complex has been characterized by singlecrystal and powder X-ray diffraction, IR spectroscopy, TG analysis, elemental analyses, and magnetic measurements. Through intermolecular hydrogen bonding and π-π stacking interactions, the [Fe(H2pdtc)2]− complex anions are assembled into supramolecular double chains with the K+ cations located between them. The variable temperature magnetic measurement has shown a weak ferromagnetic behavior over the range 300 – 10 K followed by antiferromagnetic behavior below 10 K.
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