Unless otherwise specified, all of the SAPT0 calculations reported herein use HF wave functions for the monomers. However, we will report a few SAPT0(KS) calculations in which Kohn-Sham (KS) molecular orbitals from density functional theory (DFT) are used in place of HF orbitals. These SAPT0(KS) calculations employ the long-range corrected (LRC) density functional LRC-ωPBE . Previous work has emphasized the importance of using an asymptotically correct exchange potential in SAPT calculations , and this condition can be achieved in practice via monomer-specific tuning of the rangeseparation parameter (ω) in LRC-ωPBE functional. Although "optimal tuning" of LRC functionals is sometimes accomplished using the ionization energy (IE) theorem of DFT, IE = -ε HOMO ,