Two Coordination Polymers with Rare Topologies Based on Copper(II) and Ligands Generated by In Situ Reactions

Hydro(solvo) thermal in situ reactions provide an important strategy for the construction of coordination polymers with interesting structures and topologies. In our study, two interesting coordination polymers [Cu(C2O4)(L1)(0.5)(H2O)(2.5)](n) (1) (L1 = 3,5-bipyridyl-1,2,4-triazole) and [Cu3O2(NO3)(2)(L2)(2)- (H2O)(2)](n) (2) {L2 = 5-(3-pyridyl)-1,2,4-triazolo[3,2-c](7-aza-1-H- indazole)} were prepared through an in situ ligand deaminization reaction and an in situ ligand intramolecular amination cyclization reaction, respectively. To the best of our knowledge, the formation of an indazole cycle through an in situ intramolecular amination cyclization reaction is reported for the first time. The two coordination polymers present a rare NiP2 topology and kgd topology. Their magnetic properties have also been studied.