We are planning on comparing the results of Quantum dots and Bulk materials for our systems so we are planning to use Gaussian for QD and VASP for Bulk. Considering that we will be comparing their results we should perform the same calculations(same corrections, same functionals and all) so should we hard code the constants used in Dispersion correction(DFT-D2)? So should we use the same constants such as $C_6$, vdW_radius, scaling factors, etc ??
If setting them the same is perhaps the correct path. Then we will be using the ones given by Gaussian as we can directly print them out using
Thanks and any help is greatly appreciated !!