a new water-insoluble coordination polymer as efficient dye adsorbent and olefin epoxidation catalyst

A new water-insoluble bi-metallic coordination polymer was simply prepared via polymerization-precipitation of molybdenum complex building blocks with zn2+ cation. the linker was a di-carboxylic acid consisting of two coordination sites i.e. n,o and coo- suitable for coordinating to moo2 unit and zn2+, respectively. characterization of the prepared coordination polymer was carried out with various physicochemical methods which confirmed the proposed structure. the prepared coordination polymer preferentially adsorbed methylene blue (more than 92% of methylene blue after 2 min) relative to methyl orange and can be reused at least four times without any loss of adsorption efficiency. the adsorption process of both dyes followed the pseudo-second order kinetic equation. additionally, the obtained coordination polymer catalyzed epoxidation of olefins with tert-butylhydroperoxide (tbhp) quantitatively with excellent selectivity (>99%) under mild reaction conditions.