Abstract The convenient preparation of some methyl, ethyl, vinyl and phenyl halo-arsines and-stibines by the action of the corresponding hydrocarbon halides on elementary arsenic and bismuth is described. Suitable conditions vary with the halide employed: methyl bromide and chloride react satisfactorily at 350–375 in the presence of copper as catalyst, but vinyl bromide and chloride require a temperature at least 100 above this. Methyl ...