Coordination and supramolecular network entanglements of organodisulfonates

The infinite solid state architectures of variable organodisulfonate coordination complexes, retrieved from CSD v. 5.27, have been analyzed. The extended metal-organic frameworks (MOF) of 90 compounds are discussed with respect to binding preferences and repeating structural and linking motifs, leading to coordination polymerization and/or supramolecular self-assembly. A disentanglement method is applied in order to gain insight into the ordered periodic arrangement and understand the structure-controlling factors, amenable for that organization. Such factors as coordination predisposition and geometrical preferences of the metal ion are particularly addressed. The functionality of the disulfonate ligands is considered with respect to the topology and binding abilities of the coordinating sites, from one side, and the nature, symmetry and the additional substituent(s) of the organic spacer, from the other side. A graph-set notation, similar to that used in hydrogen bonded systems, is proposed for identification of the structural and linking motifs, observed in the extended solids of the studied compounds.