Metal–organic framework (MOF) of [Co(II)(1,4-benzenedicarboxylate)2 (pyridine)2(water)2]: Coexistence of water cyclic hexamers through carboxylate oxygens

A metal–organic framework of [Co(II)(1,4-benzenedicarboxylate)2(pyridine)2(water)2] has been synthesized and characterized by IR spectra, TGA and single crystal X-ray diffraction analysis. Discrete cyclic hexameric water clusters through carboxylate oxygens and pyridine molecules are trapped inside a two-dimensional coordination channel.

Graphical abstractDiscrete cyclic hexameric water clusters and pyridine molecules are trapped inside a two-dimensional coordination polymer. Thermal analysis shows that the oxygen atom of water is strongly incorporated as a part of this cluster.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► A Co(II) coordinated polymer, has been synthesized under hydrothermal condition. ► The 3D supramolecular structure is formed by π–π interaction and HOH hydrogen bondings. ► The water cluster plays important role to make 3D supramolecular. ► Thermal analysis shows that the oxygen atom of water is strongly incorporated as a part of this cluster.