A general procedure is described whereby (v-cyclopentadienyl)iron moieties can be bonded to polyaromatic systems, including fused molecules. Disubstitution by ( -) is found to be possible for some 15 polyaromatic molecules, while higher substitutions are not possible. Carbon-13 and proton nmr are used to ascertain the molecule structure of the (Tr-cp)Fe-substituted polyaromatic molecules. The 13C resonance of a ( -)substituted arene carbon is shown to be shifted ~40 ppm upheld from the 13C resonance for the free arene carbon. A similar upheld shift is seen for the coordinated cyclopentadienyl ring. An intensihcation of quaternary 1SC resonances in concentrated sulfuric acid, over what is seen in organic solvents, is attributed to paramagnetic impurities resulting from a slow decomposition of the compounds in concentrated sulfuric acid.
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