Figure 4.
Two different origins of the pseudo-A term in the MCD spectra of S = 2 TBP ferryl species: low-symmetry splitting of LF 5E state in Br–FeIV═O (right) vs SOC splitting of LF 5E in C3 symmetric (TMG3tren)FeIV═O (left). ΔEvertical values are derived from the fits of the vibronically resolved pseudo-A term features using two FC progressions.