Preparative and nuclear magnetic resonance studies of diazadiphosphetidines. Part V. Chloromethyl compounds of the type [(ClxH3 –xC)F2PNMe]2

Abstract

A series of chlorinated dimethyl tetrafluorodiazadiphosphetidines, [RF₂PNMe]₂, where R = ClCH₂(I), Cl₂HC (II), or Cl₃C (III) have been studied. The syntheses of the two new members of this series, (II) and (III), are described. Analyses of the ³¹P-{¹H} and ¹⁹F-{¹H} noise-decoupled n.m.r. spectra yielded values for chemical shifts and coupling constants. In addition some ¹H n.m.r. data are given, including results from computer-fitting for (II). The n.m.r. parameters and isomerism of the compounds are discussed.