New Inorganic Polymers Containing Phosphorus

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Abstract

The relatively unexplored area of main group polymer chemistry continues to offer fertile ground for scientific study. In this chapter recent developments in the area of linear inorganic polymers based on phosphorus are reviewed. The 1990s saw the development of a number hybrid polymer systems where elements such as carbon and sulfur were incorporated into polymer backbones along with phosphorus and nitrogen. Many of these novel materials were synthesized via the ring-opening polymerization of cyclic heterophosphazenes. Polythionylphosphazenes, hybrids of “classical” polyphosphazenes and polyoxothiazenes, are discussed in particular detail. In addition, polyphosphinoboranes, with a main chain comprising alternating phosphorus and boron atoms, have been recently prepared via the transition metal catalyzed dehydrocoupling of phosphine-borane adducts. These novel materials are also described.