Diamido Phosphonitrilic Chloride—Cyclic Trimer

163-165°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. 

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

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