ChemInform Abstract The chloroarene complex (Ia) reacts with the carbonylferrate (II) to give (III), whereas analogous complexes (V) are prepared starting with (Ib). The use of (Ia) only leads to reductive dehalogenation of the arene complex. The classical η6-arene structure as opposed to the alternate possible η5-cyclohexadienide carbene valence form is assigned by spectroscopic data and confirmed by an X-ray analysis of (Vb) (Pca21, Z=4).
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