Additionally, the Condon approximation neglects the effects of nuclear motion on the electronic transition dipole moment between the electronic ground-and excited state. Non-Condon contributions to the optical spectra, such as Herzberg-Teller effects, are often considered to be negligible for bright transitions with a large average transition dipole moment. For CV, the mean S 1 transition dipole moment along the QM/MM trajectories 3.66 D (with a standard deviation of 0.18 D) in toluene and 3.63 D (with a standard deviation of 0.18 D) in methanol. Similarly, the mean S 2 transition dipole moment is 3.00 D (with a standard deviation of 0.24 D) in toluene and 3.16 D (with a standard deviation of 0.29 D) in methanol. The relatively small standard deviation and large mean value of both transition dipole moments indicate that the Condon approximation likely provides an accurate description of the lineshape of CV.