Synthesis of a new polyoxotungstate-based inorganic-organic hybrid and invastigation of its catalytic activity in azide-alkyne cycloaddition reaction

Polyoxymetalates (POMs) are known as inorganic metal oxide clusters, which because of their unique physical and chemical properties are widely used in various scientific-research fields such as catalysis, electronics, magnetism, optics, medicine, and etc. Many various methods are applied to improve the catalytic performance of POMs, including the stabilization of these particles on silicates, metal-organic frameworks (MOFs) and preparation of inorganic-organic hybrid material with these components. In this work, first, polyoxotungstate-based inorganic-organic hybrid was synthesized by in-situ protocols. For this purpose, benzimidazole (bim) and polyoxotungstate are used as a linker and POM, respectively. The obtained precipitate was characterized by FT-IR, CHN, PXRD and ICP techniques and finally, the catalytic activity of the synthesized particles was investigated in the azide-alkyne cycloaddition (AAC) reaction, and the effect of different parameters such as temperature, solvent, time and catalyst content on reaction efficiency were studied.[1-3]