As mentioned above, it was observed that the solvent plays an important role during the formation of the crystalline structure of ZIF-8. As it can be seen in Figure , a dominance of water and methanol, followed by DMF and other solvents was found. Therefore, the following analysis was restricted to the first two. Figure showcases the relation between the abovedescribed mechanisms (based on individual reports) and the general trends found in the literature. In the case of water, faceted particles can be obtained for a relatively low linker excess, yet the vast majority of individual studies report poorly faceted or quasispherical particles (one should always bare in mind that solvothermal synthesis and modulator addition can turn this around). For methanol, there is one big difference though; the molar excess needed to achieve crystalline ZIF-8 particles is much lower than in the case of waterbased synthesis, and only a very low excess, close to stoichiometric 1:2 ratio is enough to yield faceted particles. The absence of data points at higher molar ratios can be due to either unreported negative results, or simply to the fact that those regions of the synthetic space remain unexplored.