The sections in this article are
Introduction
Scope and Structure
Polymers with only Main Group Elements in Their Backbone
Polysilanes
Polygermanes and Polystannanes
Polysiloxanes
Polycarbosilanes
Polyphosphazenes
Polysilazanes
Further Main Group Hybrid Polymers
Polymers that have Transition Metals as Integral Parts of Their Main Chains
Poly(1,1′‐metallocenylenes)
Poly(1,1′‐metallocenylene arylenes)
Further Poly(1,1′‐metallocenylene) Derivatives with π‐Conjugated Bridging Units
Poly(1,1′‐metallocenylene ethylenes)
Phosphorus‐, Sulfur‐, and Selenium‐Bridged Poly(1, 1′‐metallocenylene) Derivatives
Further Poly(1,1′‐metallocenylene) Derivatives with Nonmetallic Bridging Units
Poly(1,1′‐ferrocenylene silanes) and Poly(1,1′‐ferrocenylene germanes)
Poly(metallaines)
Polymers from Octahedrally Coordinated Polyimine‐Transition Metal Complexes
Polymers from Tetrahedrally Coordinated Polyimine‐Transition Metal Complexes
Schiff‐Base Coordination Polymers
Further Transition Metal Coordination Polymers
Poly(phthalocyaninato)‐siloxanes and Related Polymers
Conclusions
Acknowledgements