We also anticipate the possibility of Zr2O12 isomers of Zr2(EA)8 by flipping the orientations of the ellagate linkers, although these have not yet been considered in this study. Unlike the other reported MOFs, SU-103 is made of dimeric Zr2O12 units. One of the two phenolic oxygen atoms of each ellagate catechol is coloured blue to clarify the differences in ellagate orientations as described in Fig. .