Notizen: Das 1,1′,3,3′-Tetrakis(dimethylamino)-1λ⁵,3 λ⁵-diphosphetium-Kation / The 1,1′,3,3′-Tetrakis(dimethylamino)-1λ⁵,3 λ⁵-diphosphetium Cation

Abstract

Preparation and properties of the λ5-1,3-diphosphetium cation are described. The NMR data and some results of the X-ray structural analysis are discussed.

Terminal methylene phosphonium ions: precursors for transient monosubstituted phosphinocarbenes

“…In agreement with the isostructural phosphete ion [(NMe 2 ) 2 PCH 2 CHP(NMe 2 ) 2 ] + , the 2 J PH coupling constant with the CH bridge is not resolved. 61 In the 13 C{ 1 H} NMR spectrum of [7]BArF 24 , characteristic triplets are observed for both the CH bridge (63.1 ppm, 1 J CP = 134 Hz) and the CH 2 bridge (51.7 ppm, 1 J CP = 84 Hz).…”