Metalated Tetra‐ and Penta(cyclopentadienyl)‐cyclopentadienyl Compounds: Syntheses by Multiple Pd‐Catalyzed Cyclopentadienylations

A one-step synthesis of the penta(cyclopentadienyl)cyclopentadienyl complex 1 can be achieved from [Mn(η5-C5I5)(CO)3] and CpSnMe3. Complex 1 can be converted to the corresponding novel pentaanion by reaction with BuLi. Because of their topography these compounds are interesting with regard to the construction of metalated semibuck-minsterfullerenes and metallobuckminsterfullerenes.