Synthesis of Phenylchlorotrisphosphonitrile

The Phosphazenes (Phosphonitrilic Compounds).

“…A distinction can be made between cis-trans isomerism, and position isomerism. Two different 2,4,6trichloro -2,4,6 -triphenylcyclotriphosphazenes (VI) (175,328) and three different 2,4,6,8-tetrachloro- 2,4,6,8 -tetraphenylcyclotetraphosphazenes (VII) have been prepared (327,328). One chlorine atom and one phenyl group are attached to each phosphorus atom, but the absolute configurations are not known.…”

“…Shaw and Stratton re-investigated the reaction of phenyltetrachlorophosphorane with ammonium chloride: three isomers of formula 4 4 1 4 4, and a derivative, NsP3Ph3Cl3, were isolated (327,328). A different derivative, N3P3Ph8Cl3, has been obtained from a similar reaction (175), and these compounds provide the first examples of cis-trans isomerism in the phosphazene field. The non-geminal configurations were Reaction of liquid ammonia with diethyltrichlorophosphorane gave unidentified chlorine-containing, moisture-sensitive products; on heating, a 37% yield of hexaethylcyclotriphosphazene and a 20% yield of octaethylcyclotetraphosphazene were obtained.…”

“…Fluorophosphazenes show no appreciable absorption in the visible or near ultraviolet regions of the spectrum (69,320) and continuous absorption begins near [170][171][172][173][174][175][176][177][178][179][180] µ (115). The far ultraviolet spectra of hexafluorocyclotriphosphazene and octafluorocyclotetraphosphazene exhibit maxima of high intensity (log e ca 4.0) at 149 ± 0.5 µ and 147.5 ± 0.5, respectively, and both compounds absorb more strongly beyond minima near 141 µ.…”