ELECTROCHEMISTRY AND SPECTROELECTROCHEMISTRY OF AN ALPHA-IMINOOXIME IRON(II) MACROCYCLIC COMPLEX

Herein we report on the electrochemistry and spectroelectrochemistry o f the complex [Fe(imox) (Nmin)(2)](+), 1, where imox = 11-tetraazaunde cane-,3,8,10-tetraen-11-ol-1-olate, and Nmim = N-methyl imidazole. In aqueous solution, 1 undergoes aquation producing [Fe(imox)(Nmim)(H2O)] (+), which under one-electron oxidation leads to formation of a mu-hyd roxo iron(III) dimer with an estimated K-dim value of 1.0 x 10(4). The forward and reverse rate constants for the dimerization reaction are k(1) = 1.8 x 10(3) M(-1) s(-1) and k(-1) = 0.18(-1), respectively.