Two-Electron Reactions in Organic and Organometallic Electrochemistry.

Electrochemical and Spectroelectrochemical Investigations of “Figure-Eight” Octapyrrolic Macrocycles, Free Bases, and Their Mononuclear, Homo- and Heterodinuclear Complexes with Divalent Transition Metals

“…It could either result from non-interacting redox centres in the ligand, or from geometric changes occurring after the third electron exchange, which raises the energy level of the HOMO, making the removal of the fourth electron easier. [28] Theoretical approaches should be undertaken in order to obtain a better insight into these new families of compounds. Nevertheless, it should be stressed that unlike other polypyrrolic macrocycles, such as porphyrins, the COP ligands studied here are not planar [19,20] and do not possess an aromatic π-electron system, although they are fully conjugated.…”

Investigation of potential inversion in the reduction of 9,10-dinitroanthracene and 3,6-dinitrodurene

“…This case corresponds to ''inversion of potentials'' and it corresponds to E 0 1 À E 0 2 < 0. Examples of potential inversion have been reviewed [1,2] and later literature has been cited in a recent publication [3]. In most cases, potential inversion is associated with significant structural change associated with the first and/or second electron-transfer reaction.…”

Electrode kinetics in non-aqueous vanadium acetylacetonate redox flow batteries

“…It is common for coordination complexes to undergo successive one-electron transfers, where sequentially greater or lesser energies are associated with each electron exchanged [25]; several researchers have modeled these systems. Asselt et al used chronoamperometry and steadystate voltammetry to measure the diffusion coefficients for several palladium complexes at a gold electrode and observed reversible electron-transfer reactions [26].…”