Chemistry Letters, Vol.46, No.8, 1197-1199, 2017
An Antiferromagnetically Coupled Heterometal Cu6Fe Wheel
A heterometal Cu6Fe wheel molecule, [(Cu6FeIII)-Fe-II(HL)(6)-(OH)(2)(OCH3)(4)](NO3)(3)center dot 6H(2)O (1 center dot 6H(2)O) (H2L = 1-(2-pyridine)-3-(2-pyrrole)acetylacetone) was synthesized by the one-pot reaction of H2L with copper and iron sources. X-ray structural analysis reveals that the heptanuclear wheel cluster consists of a central Fe(III) ion surrounded by six Cu(II) ions, linked through methoxo-and hydroxo-bridges. Cryomagnetic studies indicate intramolecular antiferromagnetic interactions were operative.