STUDIES ON TETRAAZA[14]ANNULENE-NICKEL(II ) COMPLEXES .2. SYNTHESES AND ELECTROCHEMICAL-PROPERTIES OF SUBSTITUTED TETRAAZA[14]ANNULENE-NICKEL(II) COMPLEXES

A series of tetraaza [14] annulene nickel (II) macrocycles, which have cis- and trans-isomers, were synthesized for the first time by the re action of template effect and electrophilic substitution. All of them have been characterized via EA, IR, UV, H-1 NMR and MS. Especially the data of H-1 NMR spectra demonstrate that the two isomers really exist . In addition, the electrochemical behavior of the above compounds, to gether with another series of tetraaza [14] annulene nickel (II) compl exes, have been studied. We draw the conclusions of the CV peaks by us ing the transient and ESR electrochemical methods, discussed the mecha nism of forming films on the electrode surface by electropolymerizatio n.