text: P-NMR spectroscopy is the usual method for assaying hexachlorophosphazine and its reactions. Hexachlorophosphazine exhibits a single resonance at 20.6 ppm as all P environments are chemically equivalent.
  In it IR spectrum, the 1370 and 1218 cm vibrational bands are assigned to ν stretches. Other bands are found at 860 and 500–600 cm, respectively assigned to ring and ν.
  Hexachlorophosphazine and many of its derivatives have been characterized by single crystal X-ray crystallography.