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Linear correlation between number of CF3 ligands and rising-edge energy at f′ = −8 (see SI). An energy correction of −3.5 eV was applied to complex 5, as described in the text. Results of linear regression (95% confidence intervals): R2 = 0.978, slope = 2.6 ± 0.7 eV/CF3, y-intercept = 8992 ± 1 eV.
