This Thesis describes three major projects which cover three distinctive areas, namely, organometallic, polymer and materials chemistry. Chapter 1 provides an introduction to the Thesis. First, an overview of strained cycles is given, with particular emphasis on strained [1]ferrocenophanes which includes an overall description of strain related structural properties and their influence in ring-opening reactions. Then strained rings as precursors to polymers by ring-opening polymerization (ROP) is discussed with special focus on the polyferrocenylsilane (PFS) based homopolymers and block polymers obtained from ROP of strained sila[1]ferrocenophane monomers.