The ring-opening polymerization of strained, ring-tilted metallocenophanes represents a new and versatile route to high molecular weight poly(ferrocenylsilanes). In this presentation the properties of poly(ferrocenylsilanes) will be described together with the relationships between the monomer structure, strain energy, and polymerization behavior. In addition, the extension of the ring opening route to the preparation of poly(ferrocenylgermanes) and poly(ferrocenylphosphines) will be outlined and the unusual properties of the polymers will be discussed.
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