Table 1.

Parameters considered in the three-state vibronic model study

Parameter	Value
Energy of the high-frequency (HF) vibrational normal mode, ħωHF	1200 cm−1
Vibronic coupling constant corresponding to the LE state for the HF vibrational mode, $g_{\mathrm{HF}}^{\mathrm{LE}}$	0.7
Vibronic coupling constant corresponding to the D+A− state for the HF vibrational mode, $g_{\mathrm{HF}}^{{\mathrm{D}}^{+}{\mathrm{A}}^{-}}$	0.7
Energy of the low-frequency (LF) vibrational normal mode, ħωLF	100 cm−1
Vibronic coupling constant corresponding to the LE state for the LF vibrational mode, $g_{\mathrm{LF}}^{\mathrm{LE}}$	2.0
Vibronic coupling constant corresponding to the D+A− state for the LF vibrational mode, $g_{\mathrm{LF}}^{{\mathrm{D}}^{+}{\mathrm{A}}^{-}}$	4.2
Transition dipole of the LE state localized on the donor,$∣{\overrightarrow{\mathbf{\mu }}}_{\mathrm{l}}∣$	10 D
Diabatic electron-transfer (ET) distance between donor and acceptor, $∣{\overrightarrow{\mathbf{R}}}_{\mathrm{ET}}∣$	8 Å
D+A−-G electronic coupling, $t_{{\mathrm{D}}^{+}{\mathrm{A}}^{-}-\mathrm{G}}$	30 cm−1
D+A−-LE electronic coupling, $t_{{\mathrm{D}}^{+}{\mathrm{A}}^{-}-\mathrm{LE}}$	0–300 cm−1