Abstract The halobenzoquinones, p-fluoranil, p-chloranil and o-bromanil have been successfully used for thesimultaneous chemical polymerization and oxidation of pyrrole. The electrical conductivity ([sgrave]) of thepolypyrrole(PPY)-p-chloranil complex is about 2-10 S/cm while ([sgrave]) for the PPY-p-fluoranil and PPY-o-bromanil complexes is in the range of 10−3-10−2 S/cm. XPS measurements indicate the presence ofhalogen anions in all three PPY-halobenzoquinone complexes and that the oxidation process may haveproceeded further than pure molecular charge transfer complex formation. The physicochemical properties of these complexes are reported in some detail.