A New High-Yield Synthesis of Cl3PNSiMe3, a Monomeric Precursor for the Controlled Preparation of High Molecular Weight Polyphosphazenes

The phosphoranimine, Cl(3)P=NSiMe(3), was prepared using a new, high-yield (>80%), one-pot synthesis via oxidation of the chlorophosphine, Cl(2)PN(SiMe(3))(2) with SO(2)Cl(2) in ether. Cl(3)P=NSiMe(3) is a valuable monomeric precursor in the synthesis of well-defined polyphosphazenes.