The syntheses and structures of the coordination polymers [Cd(ppeb)2(H2O)2]n·(NO3)2n (1), [Cd(ppeb)2(ClO4)2]n (2), [Cd(opeb)2(NO3)2]n (3) and [Cd(opeb)2(H2O)2]n·(ClO4)2n (4), where ppeb and opeb represent the 1,4- and 1,2-isomers of bis[2-(3-pyridyl)ethyl]-benzene, C20H20N2, respectively, are described. Each structure contains trans-CdO2N4 octahedra. In 1 and 2, they are bridged by pairs of ligands to generate looped chains, whereas in 3 and 4 the ligands link the metal nodes into squashed 44 polymeric sheets. In 1 and 4, O–H…O hydrogen bonds from the coordinated water molecules to the uncoordinated anions help to consolidate the structures.
- coordination polymer
- flexible ligand
Plater, M. J., De Silva, B. M., Foreman, M. R. S. J., & Harrison, W. T. A. (2015). One-dimensional and two-dimensional coordination polymers constructed from Cd2+ ions and flexible bipyridyl bridging ligands. Journal of Coordination Chemistry, 68(10), 1719-1732. https://doi.org/10.1080/00958972.2015.1028381