Molecular insights into electron transfer processes via variable temperature cyclic voltammetry. Application of the asymmetric Marcus-Hush model

► Asymmetric Marcus-Hush (MH) model is employed in variable temperature voltammetry. ► The reorganization energy and degree of adiabaticity can be quantified. ► Reduction of nitropentane in acetonitrile is studied via fast-scan cyclic voltammetry. ► A reorganization energy of 1.7 eV and a symmetry parameter of −0.14 are obtained. ► Asymmetric MH model and Butler-Volmer lead to superior fitting than symmetric MH.