Supramolecular Architectures in Three Metal(II) Coordination Polymers with 2,5-Dichloroterephthalate and Flexible Bis(Benzimidazole) Ligands.

Three supramolecular coordination polymers, namely [Ni(L1)(DCTP)(HO)] (1), [Cu(L2)(DCTP)] (2), [Co(L3)(DCTP)] (3) (L1 = 1,5-bis(5,6-dimethylbenzimidazole)pentane, L2 = 1,4-bis(5,6-dimethylbenzimidazole)butane, L3 = 1,4-bis(benzimidazole)-2-butylene) have been hydrothermally synthesized and characterized by single crystal X-ray structure determination, FT-IR, elemental analysis, X-ray powder diffraction (XPD), and thermogravimetric analysis (TGA). CP 1 exhibits 2D 6 honeycombed network structure, which is further extended into a 3D Moganite ( mog) supramolecular framework by classical O-H⋯O hydrogen-bonding interaction. CPs 2 -3 present 2D (4,4) layers, and 3D supramolecular frameworks that are formed by π- π stacking interactions. Furthermore, the catalytic activities of CPs 1-3 for the degradation of methyl orange in a Fenton-like process has been investigated, and CPs 1-3 show strong photoluminescence properties at room temperature in solid state. [ABSTRACT FROM AUTHOR]