Tris phosphonitrile

The channels in the complex of benzene with tris (o-phenylenedioxy)-phosphonitrile trimer run parallel with the c axis of the hexagonal unit cell (a = 11.68, c = 10.077 A). The planes of the central... 

The kinetics of the polymerization of tri- and tetraphosphonitrilic chlorides in solution and in bulk have been studied by Patat and Kol-linsky (58) and Patat and Frombling (57). Hydrocarbons are unsuitable solvents, since they react to give hydrogen chloride successful results w ere obtained in carbon tetrachloride. The proposed mechanism involves unimolecular initiation, either by oxygen (in solution) or another phosphonitrilic molecule (in bulk). A bimolecular propagation step is followed by unimolecular termination. Traces of water were foimd by Renaud to have a significant effect on the polymerization process (62, 63). 

By the action of ethyl iodide on the tri- and tetrasilver salts of the appropriate phosphonitrilic acids, Ratz and Hess (61) have prepared the ethyl esters of the iV-ethyl phosphonitrilates (EtN PO(OEt))3,4. The trimeric ester is a crystalline compound which forms a dihydrochloride. 

No phosphonitrilic alkyls have been obtained. Stokes 85) continued the work of Couldridge 20) on the reaction of zinc ethyl with the tri-meric chloride at high temperatures a violent reaction took place, but no identifiable products could be isolated. It is probable that alkyl phosphines were formed. W. Philpott 2) found the trimeric chloride in ethereal solution to be unreactive to methyl Grignard reagents and to aluminum alkyls. Unsuccessful attempts have been made by H. T. Searle 2) to prepare the methyl derivatives by reaction of Me2PCls with ammonium chloride, either dry or in tetrachloroethane. Most of the expected hydrogen chloride is evolved, but ring closure does not take place. 

Barium iodate 1-hydrate, synthesis 4 Indium(I) bromide, synthesis 6 Hexachlorodisiloxane, synthesis 7 Trichlorosilanethiol, synthesis 8 Tris(acetylacetonato)silicon chloride, synthesis 9 Titanium(III)chloride, synthesis 11 Bis[tris(acetylacetonato)titanium(IV)] hexachloro-titanate(IV), synthesis 12 Zirconium(IV) iodide, synthesis 13 (Triphenyl) aminophosphonium chloride, synthesis 19 (Dimethylamido)phosphoryl dichloride, synthesis 20 Bis(dimethylamido)phosphoryl chloride, synthesis 21 Trimeric and tetrameric phosphonitrilic bromides, synthesis 23 Phosphorus(V) chloride-boron trichloride complex, synthesis 24... 

A mixture of 12-ketostearamide, triethylamine, and tetrahydrofuran stirred and heated to reflux, external heating discontinued, POClg in tetrahydrofuran added at a rate to maintain gentle reflux, which is continued an additional 0.5 hr. -> 12-ketostearonitrile (startg. m. f. 362). Y 84%. B. Freedman and G. Fuller, J. Am. Oil Chemists Soc. 49,188 (1972) with phosphonitrile chloride s. J. C. Graham and D. H. Marr, Can. J. Chem. 50, 3857 (1972) with tris(diethylamino)phosphine s. T. Sodeyama, M. Kodomari, and K. Itabashi, Chem. Lett. 1973, 577. 

Phosphonitrilic chloride Phosphoric acid amides Phosphonic acid amides Phosphinic acid amides Tris(aziridinyl) phosphine oxide... 

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