One new zinc-organic framework constructed from biphenyl-3,4′,5-tricarboxylic acid

One new Metal-Organic Frameworks, [(CH3)(2)NH2](4n)[Zn-4(L)(4)](n) (1), had been successfully constructed by the utilization of biphenyl-3,4',5-tricarboxylic acid (H3L) and Zn ion. Two zinc ions are bind together to form the dinuclear metal secondary building units (SBUs), which had been stabilized by six carboxylate ligands. The dinuclear SBU exhibits the 6-connected mode via six L ligands, which presents the 6-connected mode. The tricarboxyl ligand connects three zinc-based SBU to form the 3,6-connected topological structure. The activated sample could reserve the certain porosities and exhibit the corresponding gas sorption for C2H2, which exhibits the potential application as separation materials towards C-2 mixtures.