chemistryPhosphoniumsaltsDiazadiphosphetidinesPhosphazoles1-AzaallylcompoundsWe report the preparation of the novel phosphonium salts [Ph2PaP(NR′2)N(R)C(tBu)=CbH]A(Pa–Cb) (2a; R′ = Et, R = SiMe3, A = Cl; 2b: R′ = Me, R = SiMe3, A = Cl; 2c: R = Et...