The histograms of 14 pore shapes are presented in the Supporting Information Section S3 and the raw counts for both mono-functionalized bdc and pbdc linkers is included in the Supporting Information as a spreadsheet. One pore shape, 𝑇 𝑒𝑡 2 4 𝐷𝑖 8 , is excluded as no crystal structures of this topology are yet reported. Two different size of linkers are used (Figure ). The first one is the linker bdc and the second one is the pbdc linker. The 𝑇 𝑒𝑡 2 𝐷𝑖 4 pore topology has point group D 4ℎ . The FG pair distance histogram fingerprint of the pore using linker bdc and pbdc in Figure . The blue bars in both histograms shows the distances inside the pore, and can be used to determine the size of the pore. The longest distance is approximately the cross section of the void space. Expanding the linker to pbdc, would enlarge the 𝑇 𝑒𝑡 2 𝐷𝑖 4 pore, from d = 6.0Å to 9.0Å.