To validate the accuracy of the calculated lattice energies, we compare the DFT-D determined lattice energies against experimental sublimation enthalpy data. The experimental data used here were curated by Gatsiou and co-workers and Robinson et al. . In the latter source, some of the structures are quoted with different CSD Refcodes relative to the structures in our database. An RMSD 50 comparison is done between the two CSD Refcodes to validate that each experimental value quoted is indeed in relation to the same structure within our database. We do not face the same ambiguity in the former source since the structures in our primary datasets contain all the structures from with the same Refcodes. To convert the finite-temperature sublimation enthalpies into static, 0 K lattice energies, the Dulong-Petit law is used as an approximate correction for temperature effects . Between the two databases, there can be multiple reports of sublimation enthalpies for the same structure. There is no objective criterion to judge the reliability of each individual source, hence we simply consider the range of the reported data. The results of this comparison are summarised in Tables and. A full list of all the experimental data used can be found in Table of the supporting information.