No abstract

Es wird über eine einfache Darstellung von CH3PF2 aus CH3PCl2 berichtet, welches in den supersauren Systemen HF/MF5 (M = As, Sb) zu den Phosphoniumsalzen CH3PF2H+MF6− protoniert wird. CH3PF2H+AsF6− kristallisiert in der Raumgruppe P1 mit a = 548,4(4) pm, b = 695,5(8) pm, c = 960,2(9) pm, α = 94,68(5)°, β = 97,19(6)°, γ = 94,41(6)° und Z = 2, das isostrukturelle CH3PF2H+SbF6− mit a = 554,3(3), b = 724,2(4), c = 970,4(5), α = 94,73(4)°, β = 96,14(5)°, γ = 95,30(4)°.

No abstract

The vibrational spectra of all members of the fluorophosphonium cation series are reported, including the protonated and deuterated species PX4-n Fn+ (X = H, D; n = 0-4). The unequivocal assignment of the vibrations follows from the isotopic shifts and by means of force field calculations. Furthermore, the force constants are discussed for the complete series.

ChemInform Abstract The title iododisulfane is synthesized by reacting CF3SSH with N-iodosuccinimide at -120 rc C. Vibrational spectra are recorded to characterize its physical properties. To secure a systematic characterization the vibrational spectra of the homologues CF3SSX with X: F, Cl, Br, H are analyzed for comparison. Valence force fields for these disulfanes and force constants are determined. In addition the gas-phase structures of CF3SSF and CF3SSH are determined by electron diffraction.