Postsynthetic ionization of an imidazole-containing metal–organic framework for the cycloaddition of carbon dioxide and epoxides

A bifunctional imidazolium functionalized Zr-based metal–organic framework, (I⁻)Meim-UiO-66, was successfully prepared, which can serve as an efficient heterogeneous catalyst towards the capture and coupling of CO₂ with epoxides.