Phenyl (@-phenylethyny1) iodonium chloride, from iodosobenzene dichloride and lithium phenylacetylide, decomposes at room temperature to iodobenzene and chlorophenylacetylene. In solution this salt adds hydrogen chloride to give a new salt, phenyl (a-chlorostyry1) iodonium chloride. The latter cation has been isolated as the stable fluoroborate and chloride and as the much less stable iodide. The acetylenic and ...
