Four new isostructural metal-organic frameworks constructed by a new butterfly-typed nitroheterocyclic carboxylic acid: Synthesis, crystal structures and properties

Four new isostructural coordination polymers, [M2(μ2-H2O)(DTBC)2] (CTGU- 26(M), M ​= ​Zn, Cd, Co and Ni] have been prepared with a new butterfly-typed nitroheterocyclic 4,6-di- 1H-1,2,4-triazol-1-yi-1,3-benzenedicarboxylic acid(H2DTBC) ligand and metal salts under hydrothermal condition. CTGU-26(Zn) features an unusual 2-nodal (4, 8)-connected scu topological network generated by [Zn2(μ2-H2O)(COO)4] units and DTBC2− anion linkers. Luminescent...