A new tetrazolate zeolite-like framework for highly selective CO2/CH4 and CO2/N2 separationElectronic supplementary information (ESI) available: Experimental details, crystallographic data, structure representation, PXRD spectra, TGA diagrams, and calculation details of IAST selectivity. CCDC 988248. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c4cc05729e

A new tetrazolate zeolite-like framework with a diamond topology, UTSA-49, was synthesized. UTSA-49 shows high selectivity for CO 2 /CH 4 and CO 2 /N 2 indicating a synergistic effect of the suitable pore size/shape and functional groups . A new tetrazolate zeolite-like framework with uncoordinated N atoms and methyl groups exhibits high selectivity for CO 2 /CH 4 and CO 2 /N 2 , indicating a synergistic effect of the suitable pore size/shape and functional groups.