Recent studies in metal-cyclopentadienyl and metal-arene chemistry
The formation, chemical reactivity, and spectral properties of a variety of new ,r-bonded and G-bonded organic derivatives of the transition metals are described. The Effective Atomic Number (E.A.N.) Rule predicts the existence of an isoelectronic series of mixed 'sandwich' complexes which contain a cyclo-pentadienyl ring and carbocyclic rings of varying sizes. Bis(it-cyclopenta-dienyl)iron or ferrocene (III) was the first member of this series to be discovered , and