Abstract
Decamethylferrocene in dichloromethane is readily oxidised by one equivalent of aqueous hexacyanoferrate(III) by electron transfer at the liquid/liquid interface. In the presence of excess hexacyanoferrate(III), the resulting [Fe III(η-C 5Me 5) 2] + ions are extracted into the organic phase, and upon addition of n-heptane, crystals of composition [Fe III(η-C 5Me 5) 2] 3[Fe III(CN) 6]·2CH 2Cl 2·6H2O are formed. The structure has low symmetry and consists of a face-centred array of rows of staggered decamethylferrocenium ions, interspaced with negatively charged ribbons comprising hexacyanoferrate(III) ions and eclipsed decamethylferrocenium ions. Magnetic measurements are consistent with a structure consisting of non-interacting low spin paramagnetic Fe III centres.
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