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.