Building Metal Organic Frameworks with Pyridine Fuctionalised Imidazolium Salts Spacers

Pyridine functionalised imidazolium salt (1, 3- bis(4-picoly)imidazolium chloride) (1) was synthesized from the reaction of picolyl chloride and imidazole in the presence of sodium hydride in DMF through solvothermal process. It was characterized spectroscopically and by single crystal X-ray analysis. Reaction of this pyridine substituted imidazolium salt with Ag2O and Cu2O results in the formation of two coordination polymers, [Ag-((4–Picolyl)2 Imidazolium)2] hexafluorophosphate (4) and [Cu-((4–Picolyl)2 Imidazolium)2] hexafluorophosphate (5). These compounds were characterized spectroscopically (1H and 13C NMR), by elemental analysis and also using single crystal X-ray diffraction. Compounds 4 and 5 crystallised in the monoclinic system, space group P 2/c. and were found to be isostructural exhibiting 1D coordination frameworks.