The two-dimensional potential energy surface for benzene dimer (Fig. ) has a similar topology to that reported in previous theoretical studies. It is repulsive in the eclipsed-cofacial configuration (which is the coordinate origin in Fig. ), but remains so only for displacements < 0.25 Å. Symmetry-equivalent minima (with well depths of -2.4 kcal/mol) occur at about 2.0 Å displacement along directions that parallel the C-H bonds. (This corresponds to directions of 30 • and 90 • in Fig. ; note that the one-dimensional cuts that are plotted in Fig. do not correspond to this direction but rather to horizontal displacement along the 0 • direction.) The maximum well depth is slightly smaller than that reported in previous XSAPT+MBD studies where the δHF correction was included. The vdW potential surface (Fig. ) has similar char- acteristics, although the orientation of the potential wells is rotated by 30 • so that these occur along the 0 • and 60 • directions. However, there is no other energy component (or combination of two energy components) that generates potential minima that can be identified with those occurring on the E int surface; see Fig. for examples.