Zeolitic Tetrazolate-Imidazolate Frameworks with High Chemical Stability for Selective Separation of Small Hydrocarbons

Presented here are two zeolitic tetrazolate-imidazolate frameworks (ZTIFs) with SOD and cag topologies (ZTIF-6 and -7) directed by link–link interaction. Furthermore, the SOD-type ZTIF-6 shows high chemical stability and permanent porosity, as well as selective separation of C2 hydrocarbons over C1 methane.