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This paper is the second in a series devoted to the electrochemical oxidation of diphenylamines and of coupling products obtained from them. Anodic processes with 5,10-diaryl 5,10-dihydrophenazines and tetraarylhydrazines in acetonitrile are studied by voltammetry and coulometry. Absorption and epr spectra of the corresponding cation radicals are described. This study gives the opportunity to discuss an anodic substitution involving a di-cation as the reactive intermediate. Aged solutions of electrogenerated hydrazinium radicals in neutral media and the acidic degradation of tetraarylhydrazines give a similar mixture the composition of which depends upon the nature of the para substituant on the aromatic ring.