The electrochemical properties of the complexes were studied using cyclic voltammetry where Eox is reported vs Fc/Fc + , c calculated by ELUMO = EHOMO + Eopt, d Measured from the intersection of the normalized absorption and emission spectra, e remeasured for this study in acetonitrile. The experimental HOMO values for the complexes lie between -5.41 and -5.45 eV, in good agreement with the calculated energy levels. In contrast, the experimental LUMO values (calculated using the optical energy gap, Eopt, due to the absence of an observed reduction wave in the electrochemical experiments) were significantly stabilised in comparison to the theoretical values.