Ein weiteres P-Fluor-Ylid: [N(CH3)2]2PF=CH-CH(n-C4H9)-P[N(CH3)2]2 (4) Darstellung und NMR-Daten / A Further P-Fluoro-Ylide: [N(CH3)2]2 PF=CH-CH(n-C4H9)-P[N(CH3)2] 2 (4) Preparation and NMR Data

Abstract

Preparation and properties of the title compound 4, [N(CH3)2]2 PF2-(CH2)2-PF2[N(CH3)2]2 (2), and [N(CH3)2]2 +PF-(CH2)2--PF5 (3), are described. The 1H, 19F, 31P, and 13C NMR spectra in double and triple resonance mode of 4 are recorded and discussed in detail. A 7J(HF) long-range coupling could be identified. 300 MHz-1H spectra show hindered rotation around the P-N bonds at room temperature