The electrochemical polymerization of some Schiff's base‐type monomers like pyrrole‐2‐aldehyde azine, N,N′‐di(2‐pyrrolylmethylene)‐1,4‐diaminobenzene , and N,N′‐di(2‐pyrrolylmethylene)‐4,4′‐diaminobiphenyl proceeds as a precipitating polymerization to the anodic compartment. The voltammetric study of monomers and polymers using Pt electrodes and paste‐carbon electrodes were carried out. The results are in agreement with the MO calculations using the Hückel approximation for evaluating of the reactivity of the monomers.

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The syntheses and results of the physico‐chemical studies on aqueous solutions and in solid state of new heteropolytungstates with one or two metal ions (Fe, Ni, Zn) in the anion are presented. The complexes are of particular structural and synthetic interest. The heteropolytungstates with two different metal ions in the anion are the first complexes of his type studied.

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The polarographic reduction of some acetylenic derivatives—phenylacetylene, diphenyldiacetylene and methyl propiolate, as well as of some quarternary salts (ammonium, phosphonium, arsonium and stibonium), was investigated in order to establish whether the electroinitiated polymerization process took place by direct electron transfer to the acetylenic monomer or indirectly. The half‐wave potentials of the compounds mentioned at the dropping mercury cathode and at the stationary platinum electrode were measured. From the experimental data on the polymerization of the above acetylenic monomers, some statements on the kinetics of the polymerization process were made.