Fig. 8. UV-vis spectra corresponding to the reaction of 1^(IV) NTs (left) and 2^(IV) NTs (right) upon addition of an excess of ^MeOPhSMe (reaction at 20 °C with 100 and 50 equiv. of substrate added respectively, [Fe] = 0.25 mM in MeCN). Spectra correspond to the first rapid phase of the reaction.