Synthesis of Phosphorus-Nitrogen Polymers Using Si-N-P Reagents.

摘要

Many small-molecule Si-N-P compounds of appropriate design can function as precursors to various oligomeric and polymeric P-N systems. For example, poly(dialkylphosphazenes), (R2PN)n, are readily obtained via the thermal condensation-polymerization of certain N-silylphosphinimines, Me3SiN=P(X)R2. In addition, novel 3-coordinate phosphorus-V compounds including the bis(imino)-phosphoranes, RP(=NSiMe3)2, can potentially lead to new polymers of formula (RPN) sub n, the phosphorus analogs of electrically conducting (SN) sub n. The synthesis of polyphosphazenes and their precursors and the synthesis of potential precursors to (RPN) sub n are discussed.