Rate constant nonadiabatic solvent effects

Equations [140]-[143] provide a connection between the preexponential factor entering the nonadiabatic ET rate and the spectroscopically measured adiabatic transition dipole mu- It turns out that the Mulliken-Hush matrix element, commonly considered as an approximation valid for m b = 0, enters exactly the rate constant preexponent as long as the non-Condon solvent effects are accurately taken into account. Equation [142] stresses the importance of the orientation of the adiabatic transition dipole relative to the direction of ET set up by the difference diabatic dipole Am. The value of is zero when the vectors mi2 and Am are perpendicular. 

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