It is also abundantly clear that the dispersion energy is not very sensitive to basis set, and changes by only 0.7 kcal/mol between the def2-ma-SVP and def2-QZVPD basis sets. This is consistent with earlier results for other data sets where the dispersion energy is nearly constant across a wide range of basis sets, suggesting that MBD gives both accurate dispersion energies and ones that converge quickly.