A Robust Highly Interpenetrated Metal−Organic Framework Constructed from Pentanuclear Clusters for Selective Sorption of Gas Molecules

A three-dimensional microporous metal−organic framework, Zn5(BTA)6(TDA)2·15DMF·8H2O (1; HBTA = 1,2,3-benzenetriazole; H2TDA = thiophene-2,5-dicarboxylic acid), comprising pentanuclear [Zn5] cluster units, was obtained through an one-pot solvothermal reaction of Zn(NO3)2, 1,2,3-benzenetriazole, and thiophene-2,5-dicarboxylate. The activated 1 displays type-I N2 gas sorption behavior with a Langmuir surface area of 607 m2 g−1 and exhibits interesting selective gas adsorption for C2H2/CH4 and CO2/CH4.