Durch die Umsetzung trivalenter Phosphorfluoride, RnPF3−n (n = 1, 2; R = R2N, (CH2)5N, O(CH2)4N, RO, (CH2O)2, Alkyl, Aryl) mit Phenylaziden, XC6H4N3 (X = H, 4‐CH3, 4‐Cl, 4‐Br, 4‐NO2, 3‐NO2), wurden 35 Tetrafluoro‐ und 2‐Difluorodiazadiphosphetidine sowie 4 Difluoro‐ und 30 Monofluoro‐α5‐monophosphazene dargestellt. PF3 reagiert nicht mit Phenylazid. Der Einfluß der Substituenten auf die Konstitution der Reaktionsprodukte wird diskutiert. Kinetische Messungen ermöglichten die Bestimmung der Substituentenkonstanten σPI für (CH2)5N, O(CH2)4N und R(C6H5)N (R = CH3, C2H5, n‐C4H9).
279ChemInform Abstract The Staudinger reaction between the tervalent phosphorus fluorides of type (I) and (V) and the phenylazides (II) leads to diazadiphosphetidines of type (III) and (VII) or to the monophosphazenes (IV) and (VI), respectively, depending on the substituents. PF3 does not react with phenylazide. The influence of substituents on the structure of the reaction products is discussed. Kinetic measurements allow the determination of the constants σPI of the substituents N(CH2)5, N(CH2)2O(CH2)2, and NPhR (R: -Me, -Et, -Bu) yields not given).
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