A new 2D → 2D interpenetrating polymer containing polyrotaxane- and polycatenane-like motifs: The tilt of local distortion axes for the magnetic behavior

The synthesis, structure and magnetic property of a new coordination network {[Co2(bcp)2(bipy)]}n (1) (H2bcp = 1,3-bis(4-carboxy-phenoxy)propane and bipy = 4,4′-pyridine), are reported. Compound 1 shows two identical 2D layers with 22.48.65 topology which are interpenetrated in a parallel fashion, resulting in a twofold interpenetrating motif containing polyrotaxane and polycatenane characters. Magnetic susceptibility indicated the antiferromagnetic exchange interaction. The magnetic behavior of 1 can be explained by the tilts of local distortion axes.

Graphical abstractA new compound displays twofold interpenetrating 22.48.65 topology containing polyrotaxane and polycatenane characters. The magnetic behavior of binuclear Co(II) complex can be explained by the tilts of local distortion axes.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► This topology of 1 represents a new type of 6-connection topology. ► The structure contains meanwhile polyrotaxane and polycatenane characters. ► The magnetic behavior of dinuclear Co(II) complex can be explained by the tilt of local distortion axes.