We observe further anomalies in the other two electrochemical parameters determined from the voltammetric fitting, namely the transfer coefficient and limiting current density, which are plotted in Figure as a function of the tunneling distance. indicating a high symmetry of the reduction/oxidation reactions. However, a progressive decrease of an initially constant (1-α) of 0.51 is observed for [IrCl 6 ] 3-oxidation for >3L hBN.