To investigate the slope of the adsorption energy of the chlorinated methanes, we analyzed the contributions of London dispersion interactions (in the following referred to as van der Waals (vdW) interactions) and electrostatic interactions at full loading and 300 K. The same decompositions at 400 K are given in section 3.7 of the SI (Figures and). In Figure we plotted the vdW contribution ( to the guest-guest and MOF-guest interaction energy for all methane derivates and methane itself. On the right y-axis we gave the calculated isotropic polarizabilities of the respective molecules (for computational details see Section 1.1 of the SI).