In Situ Obtained Cu(II) Compound with Coexistence of Polycatenation and Polythreading

The present study describes the preparation and characterization of the first example of metal−organic frameworks (MOFs) with the coexistence of polycatenation and polythreading involving chemically and structurally different two-dimensional square grids [Cu(II)2(5-HIPA)2(4,4′-bipy)2(H2O)2]n (A, 5-HIPA = 5-hydroxyisophthalato) and irregular layers [Cu(II)3(5-HIPA)2(2-PyC)2(4,4′-bipy)2(H2O)4]n (B) in a unique three-dimensional framework [(A)(B)]·6.5nH2O (1) with the in situ generated pyridine-2-carboxylate (2-PyC) ligand.