The ranges of these variables were based on our experience with the solvothermal synthesis of Al-PMOF and are detailed in Table . In contrast to our previous work where we used one-hot encoding for solvent type, here, we describe solvents with a continuous variable to better interpolate between different solvent types. The boiling point of the solvent is a good descriptor as it is important for solvothermal synthesis. Table : Table showing the synthetic variables, their ranges and importance based on our chemical intuition from the solvothermal synthesis. The concentration was given discrete variables: 1, 2, and 3 corresponding to high, medium, and low concentration, respectively (see Table for experimental details).