Chlorophosphaalkenyl- and chloroalkenylstibanes

Mono-, bis- and tris(chlorophosphaalkenyl)stibanes have been obtained from Mes^∗PC(SiMe₃)Li (Mes^∗ = 2,4,6-tri-tert-butylphenyl) or from the phosphaalkene carbenoid Mes^∗PC(X)Li (X = Cl) and SbF₃, Mes^∗Sb(OMes^∗)F or Mes^∗SbF₂. Bischloroalkenyl]stibanes R₂CC(Cl)]₂SbCl (R₂C = fluorenylidene and 2,7-di-tert-butylfluorenylidene) have also been obtained from R₂CC(Cl)Li and SbCl₃.