Adducts of Cyclodiphosph(V)azenes: Synthesis and Structure†
Dedicated to Professor Heinrich Nöth on the Occasion of his 80th Birthday
Abstract
The reaction of Ph2PCl and PhPCl2 with bis(trimethylsilyl)sulfur diimide in the presence of GaCl3 and AlCl3 yields diadducts of the corresponding cyclodiphosph(V)azene: [Ph2PN]2·(GaCl3)2 (1), [Ph2PN]2·(AlCl3)2 (2), and [Ph(Cl)PN]2·(AlCl3)2 (3). This reaction is triggered by Lewis acids, which catalyse the (CH3)3Si-Cl and S8 elimination. The structures of 1·2 CH2Cl2, 2·2 CH2Cl2 and 3 were determined by single crystal X-ray studies (1: triclinic, , a = 9.679(2) Å, b = 9.863(2) Å, c = 11.366(2) Å, α = 113.55(3)°; β = 99.59(3)°; γ = 106.67(3)°; V = 902.8(3) Å3, Z = 1; 2: triclinic,
, a = 9.639(2) Å, b = 9.804(2) Å, c = 11.321(2) Å, α = 113.71(3)°; β = 99.44(3)°; γ = 106.70(3)°; V = 889.3(3) Å3, Z = 1; 3: orthorhombic, Pbca, a = 14.853(3) Å, b = 9.261(2) Å, c = 16.631(3) Å, V = 2287.7(8) Å3, Z = 4.