Auger parameter measurements of phosphorus compounds for characterization of phosphazenes

X‐ray generated photoelectron and Auger transition data for several phosphorus reference compounds, including PCl₃, P₃ N₅, P₂ O₅, (C₆ H₅ )₃ P(C₅ H₄ ), (C₆ H₅ )₄ PBr, KH₂ PO₄ , NH₄H₂PO₄, and NH₄ PF₆ are presented. These data have been used to determine the relative ionicity and polarizability of phosphorus in the chlorophosphazene trimer ([NPCl₂ ]₃ ) and polymer ([NPCl₂ ]_n ). The results support recent molecular‐orbital calculations that predict a highly polarized backbone bond in the phosphazenes. Furthermore, the chlorophosphazene polymer was observed to have a greater value for the Auger parameter than the chlorotrimer, indicating that the bonding environment surrounding the polymer is more polarizable than that surrounding the trimer.