5.
Theoretical calculations: (a) geometry-optimized model of Fc( l -1) 2 (M06/Def2SVP/SMD(THF) without Ph rings to reduce computational cost); (b) comparison of experimental and theoretical ECD spectra of Fc( l -1) 2 and Fc 3 ( l -2) 2 (M06/Def2SVP/SMD(THF)//ωB97XD/Def2SVP/SMD(THF)); (c) comparison of experimental and theoretical ECD spectra of Fc( l -1) 2 after electrochemical oxidation (M06/Def2SVP/SMD(DCM)//ωB97XD/Def2SVP/SMD(DCM); (d) HONTO and LUNTO for transition #4 (80% contribution) of Fc( l -1) 2 ; (e) HONTO and LUNTO for transition #7 (76% contribution) of Fc( l -1) 2 ; and (f) model of Fc 3 ( l -2) 2 with marked ROE interactions and structural dimensions.
