Indeed, the article that reports the highest measured pore volume 64 (0.74 cm 3 g -1 as computed by our protocol and 0.8 cm 3 g -1 as reported in the article) mentions that 2.3/12 of the BDC ligands were found to be missing, much higher than the normally observed ratio (1/12). As we mentioned before, defects are the most likely reason for a measured pore volume exceeding the geometric pore volume of the perfect crystal.