Simple Route to Li‐ or Zn‐Metalated η5‐Cyclopentadienyliron‐Olefin Complexes

Some new reactions of ferrocene with lithium and olefins involve only replacement of a C5H5 ligand. The product, e.g.(1). DME and (1). TMEDA, can be metalated with ZnCl2 or CdCl2 and transformed into trinuclear complexes with olefinic ligands bonded to iron, such as(2). Reaction of (1) and trityl chloride produces the monomeric radical CpFe(COD)•. equation image