Phosphonitrile chloride

Phosphonitrilic chloride (tetramer) [1832-07-1 ] M 463.9. Purified by zone melting, then crystd from pet ether (b 40-60°) or n-hexane. [van der Huizen et al. J Chem Soc, Dalton Trans 1317 1986.]... 

Substituted poly(phosphonitrilic chloride) Eypel F Ethyl Corporation ... 

Phosphonitrilic chloride (NPCIift prepared by J. von Liebig by heating NHi or NH4CI with PCI5. 

PCI5 chlorinates alcohols to alkyl halides and carboxylic acids to the corresponding RCOCl. When heated with NH4CI the phosphonitrilic chlorides are obtained (p. 536). These and other reactions are summarized in the diagram. 

In hydroxyUc solvents, the reaction with aniline follows a bi-molecular course but is complicated by competing solvolysis. This is a striking result when compared with the behavior of picryl chloride, which is much more selective with regard to the same reagents (aniline and alcohol), and has been interpreted to mean that bond-breaking has made appreciable progress in the rate-determining step of the reaction of phosphonitrilic chloride. Furthermore, the same indication is obtained from the fact that in the reactions of the halides, the fluorine chlorine ratios are less than one. ... 

Finally, two more anionic phosphate anions with six oxygen substituents at phosphorus (Fig. 5) were isolated by serendipity. Compound 25 [43] was isolated from the reaction of naphthalene-2,3-diol and phosphonitrilic chloride in... 

Phosphonitrilic chloride PCI5+NH4CI atl50°C, or by heating cyclic trimer Cl — i>=N— 1 Rubberlike, crystallizes on stretching. Swells in benzene... 

Figure 1. Scheme showing the polymerization of the trimeric phosphonitrilic chloride to poly(dichlorophosphazene) and its subsequent substitution with the sodium salts of alcohols or phenols... 

Linear phosphonitrilic chlorides (LPNCs), silicone fluids and, 22 573 Linear photodiode arrays, 19 153 Linear polyesters, 14 116 Linear polyethylene fibers, 20 398 Linear polyimides, synthesis of, 20 273 Linear polymers, 20 391 25 455 high molecular weight, 23 733 zero-shear viscosity of, 19 839 Linear poly(thioarylene)s, 23 705 Linear PPS, 23 704. See also... 

Which phosphazene would be more flexible one made by reaction of poly(phosphonitrilic chloride) with (a) sodium trifluoroethoxide or (b) sodium trifluorobutoxide ... 

Thermal polymerization of hexachlorocyclotriphosphazene (LXXXIII) (also referred to as phosphonitrilic chloride) yields poly(dichlorophosphazene) (LXXXIV) (IUPAC poly[nitrilo (dichloro-Ls-phosphanetriyl)] or catena-poly[(dichlorophosphorus)- j,-nitrido]) [Allcock, 1976, 1986, 2002 Allcock and Connolly, 1985 Archer, 2001 De Jaeger and Gleria, 1998 Liu and Stannett, 1990 Majumdar et al., 1989, 1990 Manners, 1996 Potts et al., 1989 Scopelianos and Allcock, 1987 Sennett et al., 1986],... 

IF the product were a monomer, its structure could be drawn as Cl2PsN, which is analogous to organic nitriles. R—C=N. For this reason the original names used for these compounds were phosphonitriles, phosphonitrilic chloride, etc. However, the products are actually either cyclic or linear polymers of general formula [NPC ,] . Thus, by analogy with benzene, borazine. etc., these compounds hove become known as phosphazenes. The rn jor product of the reaction in Eq. 16.47 and the easiest to... 

AMIDO(PHOSPHONITRILIC CHLORIDE-CYCLIC TRIMER) AND 1,1 -DIAMIDO(PHOSPHONITRILIC CHLORIDE-CYCLIC TRIMER)... 

Only three amido derivatives of phosphonitrilic chloride-cyclic trimer have been described, namely, the compounds... 

C.) The solid remaining after filtration of the cooled suspension is recrystallized from diethyl ether by cooling the saturated solution to — 70°C. Yield, based upon phosphonitrilic chloride—cyclic trimer, is 80-95 g. (60-72%) m.p., 163-165°C. Anal. Calcd. for N3P3C14 (NH2 )2 N, 22.68 H, 1.31. Found N, 22.94 H, 1.35. The checkers report equally good results, working on one-third of the above scale. 

Amido (phosphonitrilic chloride—cyclic trimer) is a white crystalline, slightly hygroscopic solid, which melts at 138-139°C. and dissolves in both 1,4-dioxane and carbon tetrachloride. Slow... 

---