Figure 1 UV.csv: Wavelength / nm | EHT-dioxane / abs. | Wavelength / nm | EHT-methanol / abs. Figure 2 Figure2a.csv: EHT-dioxane; Time delay / fs (x), Probe wavelength / nm (y), Change in optical density / mDOD (z) Figure2b.csv: EHT-methanol; Time delay / fs (x), Probe wavelength / nm (y), Change in optical density / mDOD (z) Figure2c.csv: EHT-dioxane DAS; Wavelength / nm | tau_3 / amplitude | Wavelength / nm | tau_2 / amplitude | Wavelength / nm | tau_1 / amplitude | Wavelength / nm | tau_4 / amplitude Figure2d.csv: EHT-methanol DAS; Wavelength / nm | tau_3 / amplitude | Wavelength / nm | tau_2 / amplitude | Wavelength / nm | tau_1 / amplitude | Wavelength / nm | tau_4 / amplitude Figure 3 Figure3.csv: Wavelength / nm | dioxane_difference / mDOD | methanol_difference / mDOD | dioxane_2ns / mDOD | methanol_2ns / mDOD Figure 4 s0_geometry.xyz: optimised xyz coordinates for EHT ground state s1_geometry.xyz: optimised xyz coordinates for EHT first singlet excited state t1_geometry.xyz: optimised xyz coordinates for EHT first triplet excited state singlet_spectrum.csv: Sn <- S1 transition | Oscillator strength triplet_spectrum.csv: Tn <- T1 transition | Oscillator strength Figure S1 FigureS1a.csv: EHT-dioxane; Time delay / fs | 350nm signal / mDOD | 350_fit nm signal / mDOD | 400nm signal / mDOD | 400_fit nm signal / mDOD | 450nm signal / mDOD | 450_fit nm signal / mDOD | 500nm signal / mDOD | 500_fit nm signal / mDOD | 550nm signal / mDOD | 550_fit nm signal / mDOD FigureS1b.csv: EHT-dioxane residuals; Time delay / fs (x), Probe wavelength / nm (y), Change in optical density / mDOD (z) FigureS1c.csv: EHT-dioxane;Time delay / fs | 350nm signal / mDOD | 350_fit nm signal / mDOD | 400nm signal / mDOD | 400_fit nm signal / mDOD | 450nm signal / mDOD | 450_fit nm signal / mDOD | 500nm signal / mDOD | 500_fit nm signal / mDOD | 550nm signal / mDOD | 550_fit nm signal / mDOD FigureS1d.csv: EHT-methanol residuals; Time delay / fs (x), Probe wavelength / nm (y), Change in optical density / mDOD (z) Figure S2 FigureS2a.csv: EHT-dioxane error: tau1 lifetime / fs | chi^2 ratio FigureS2b.csv: EHT-dioxane error: tau2 lifetime / ps | chi^2 ratio FigureS2c.csv: EHT-dioxane error: tau3 lifetime / ps | chi^2 ratio FigureS2d.csv: EHT-methanol error: tau1 lifetime / fs | chi^2 ratio FigureS2e.csv: EHT-methanol error: tau2 lifetime / ps | chi^2 ratio FigureS2f.csv: EHT-methanol error: tau3 lifetime / ps | chi^2 ratio Figure S4 trajectory_1.csv: Sn <- S1 transition | Oscillator strength trajectory_2.csv: Sn <- S1 transition | Oscillator strength trajectory_3.csv: Sn <- S1 transition | Oscillator strength trajectory_4.csv: Sn <- S1 transition | Oscillator strength trajectory_5.csv: Sn <- S1 transition | Oscillator strength Figure S6 S0_COSMO_geometry: Optimised xyz coordinates for EHT ground state with COSMO model