Microporous Metal–Organic Framework Based on Mixing Nanosized Tris((4-carboxyl)-phenylduryl)amine and 4,4′-Bipyridine Ligands for Gas Storage and Separation

The assembly of mixing nanosized tris­((4-carboxyl)­phenylduryl)­amine ligand and 4,4′-bipyridine ligand with Zn2+ ion leads to a new microporous framework FIR-2 having pillared-layer structure and unusual (3,4,6)-connected topology, which exhibits large surface area and gas adsorption selectivity for the adsorption of CO2 over N2 or CH4. The results reveal the potential application of the long tris­((4-carboxyl)­phenylduryl)­amine ligand on the construction of functional microporous metal–organic frameworks with interesting structural topologies for gas storage and separation.