A novel paramagnetic octahedral iron cluster: synthesis and X-ray structural characterization of [Fe6(µ3-S)8(PEt3)6][BPh4]2
Abstract
The reaction of H2S with Fe(BF4)2˙6H2O and PEt3 gives [Fe6S8(PEt3)6][BPh4]2, whose structure, determined by X-ray analysis, shows that in the cation the six iron atoms are in an octahedral arrangement with the sulphur atoms triply bridging each octahedral face while the six phosphine ligands are each terminally linked to a metal atom.