IRD from the FC Geometry

As an example of the use of this method, we will describe the computation of the ESRP for the photoisomerization of the minimal retinal protonated Schiff base model tZt-penta- 

25 and 0.75 au along the path The frequency corresponding to the torsional mode has a real value (212 cm ) at 0.25 au that becomes imaginary (239i cm ) at 0.75 au. The curvature 

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