text: The molecule has a cyclic, unsaturated backbone consisting of alternating phosphorus and nitrogen centers, and can be viewed as a trimer of the hypothetical compound . Its classification as a phosphazene highlights its relationship to benzene. Hexafluorophosphazene has a hexagonal  ring with six equivalent P–N bonds. Each phosphorus atom is additionally bonded to two fluorine atoms.
  The molecule possesses D symmetry, and each phosphorus center is tetrahedral.
  The  ring in hexachlorophosphazene deviates from planarity and is slightly ruffled (see chair conformation). By contrast, the  ring in hexafluorophosphazene is completely planar.