Figure 3.
IR spectra (absorbance mode, CH2Cl2 at −45 °C) showing the effects of edt vs pdt for the oxidation of complexes containing bulky phosphine ligands: [Fe2(S2C2H4)(CO)3(Pi-Pr3)(dppv)]BF4 ([5edt]BF4, top) and [Fe2(S2C3H6)(CO)3(Pi-Pr3)(dppv)]BF4 ([5pdt]BF4, bottom).