Formation of 2D water morphologies in the lattice of the salt with [Cu2(OH)2(H2O)2(phen)2]2+ as cation and 4,6-dimethyl-1,2,3-triazolo[4,5-d]pyrimidin-5,7-dionato as anion

The crystal structure of the compound [Cu2(OH)2(H2O)2(phen)2](dmax)2·10H2O is presented, where phen = 1,10-phenanthroline and dmax = 4,6-dimethyl-1,2,3-triazolo[4,5-d]pyrimidin-5,7-dionato. The cationic species is a dinuclear hydroxo bridged Cu(II) complex, the charge of which is balanced by the heterocyclic anionic ligand. The main focus of the work is the analysis of the H-bond network, which includes two different two-dimensional morphologies, mostly built by water molecules. The first one includes a monodimensional tape superstructure built exclusively by interstitial water, with alternating four-member and six-member water clusters, the tapes being linked by the cationic complexes via coordinated water and hydroxyl groups. The second is formed by water molecules and the triazolopyrimidine anions. Both morphologies include H-bond rings of different sizes.