Synthesis, structure and topological analysis of a novel 3D Cu coordination polymer from a flexible ligand of 1,3,5-triazine-2,4,6-triamine hexaacetic acid and coligand ethylenediamine

A novel 3D inorganic–organic hybrid compound {[Cu3(en)(TTHA)(H2O)4]·4.25H2O}n(1) (TTHA = 1,3,5-triazine-2,4,6-triamine hexaacetic acid; en = ethylenediamine) has been synthesized and characterized. Topological analysis shows that the compound is a new 3,10-connected 2-nodal net with point symbol (418.624.83)(43)2, further simplification of the structure by merging two 3-connected nodes and one 10-connected node together gives a rare uninodal 8-connected hex net, we conclude that the 2-nodal net found in the network is a hex-originated supernet. TG, IR, PXRD and photoluminescent spectra of the compound 1 are investigated.