The interaction with different oxygen atoms results in varied distributions of the OSDAs in the various MOFs. The specific oxygen types that form hydrogen bonds in each structure are summarised in Table . It can be seen that oxygen atom type 2 (i.e. the phenol oxygen atom meta to the biaryl C-C bond) is the most common site for hydrogen bonding, with at least one OSDA in ten of the eleven zirconium ellagate structures (SU-102 -SU-112) interacting with this particular oxygen site.