Highly Strained Metallocenophanes: Synthesis and Ring‐Opening of Sulfur‐, Selenium‐ and Boron‐Bridged [1]Ferrocenophanes

Abstract The limits of cyclopentadienyl ring-tilting in [l]ferrocenophanes are explored with the incorporation of group 16 elements and a first row element. In this paper the synthesis and ring-opening polymerisation (ROP) behaviour of highly strained chalcogen-and boron- bridged [l]ferrocenophanes will be described.