Synthesis,structure and magnetism of a new ionic pentanuclear iron cluster

A new ionic pentanuclear Fe^III cluster, namely, triethylazanium tetrakis(μ₂‐5‐amino‐1,2,3,4‐tetrazolido)tetrakis(μ₃‐4‐chloro‐2‐{(1H‐tetrazol‐1‐id‐5‐yl)imino]methyl}phenolato)di‐μ₃‐oxido‐pentairon(III) acetonitrile monosolvate monohydrate, (C₆H₁₆N)Fe₅(C₈H₄ClN₅O)₄(CH₂N₅)₄O₂]·CH₃CN·H₂O, was synthesized using microvial synthesis methods and characterized by elemental analysis, FT–IR spectroscopy, single‐crystal X‐ray diffraction and thermogravimetric analysis. Magnetic studies reveal that the complex displays dominant antiferromagnetic intracluster interactions between the Fe^III ions through the μ₃‐oxide bridges.