AbstractThe influence of metal content of some metal chelates of an aromatic polyhydrazide on the DC and AC conductivity was studied in the temperature range of 293 to 573 K at a constant frequence of 1 kHz. The compounds studied were poly(m‐phenylene‐bis‐1,3,4‐oxadiazole) and Cu(II)‐, Ni(II)‐ and Co(II)‐chelates of the corresponding aromatic polyhydrazide. The conductivity is rather low and all compounds show a break point in the conductivity curve indicating a change in the conductivity mechanism. Cu(II)‐ions seem to have the highest influence on the DC conductivity, while Ni(II)‐ and Co(II)‐ions change the dielectric transition temperatur