Citation: He, Haiyan; Dou, Jianmin; Li, Dacheng; Ma, Huiqing; Sun, Daofeng (2011). Synthesis, crystal structures and properties of four topological structures based on 2,3,5,6-tetramethyl-1,4-benzenedicarboxylate acid and bipyridine ligands. CrystEngComm, 13, pp. 1509-.