“…In fact, a linear fitting with all C2/C3 molecules’ data points yielded (note the actual uptake of C3 molecules in Figure a was multiplied by 5 for the sake of clarity; in the linear fitting, the actual uptake values were used so that all C2/C3 data points actually fall on the same line) where C is the adsorbed amount, K is the Henry coefficient, the linear fitting slope P = 9.3 Pa ( R 2 = 0.9983), very close to the equilibrium pressure, 0.01 kPa, which is consistent with Henry’s law. The uptake at 0.01 kPa also correlates with Q st 0 , although the correlation is not as good as with the Henry coefficient, as had been explained previously. , Further comparing ethene with other three molecules (ethane, propane, and propene), their 0.01 kPa uptake, the Henry coefficient, the Q st 0 , all show significant correlation among these molecules (Figures S3–S5). These correlations could be attributed to the fact that these four alkanes or alkenes share similar interactions with ZIFs.…”