SYNTHESIS OF A NOVEL MACROCYCLIC DINUCLEAR IRON(III) COMPLEX AND ITS ELECTROCHEMICAL-BEHAVIOR ON AN ULTRAMICRODISC PLATINUM-ELECTRODE

A new macrocyclic dinuclear iron(III) complex, prepared by condensing 2,6-diformylpyridine N-oxide with 1,3-diaminopropane in the presence o f FeCl2 . 4H(2)O, and formulated as Fe2LCL6C2H5OH . 6H(2)O, was charac terized by its elemental analyses, by i.r., Mossbauer and e.p.r. spect ra, and was investigated electrochemically. The results show that two iron ions are situated in the same chemical environment in the compoun d and that the electrode reaction can be considered as a double electr on-transfer process. The diffusion coefficient is 2.16 x 10(-6) cm(2) s(-1) and E degrees' -0.169 V (versus s.c.e.) and alpha = 0.37. The av erage electron transfer rate constant k degrees' is 2.8 x 10(-3) cm s( -1).