An unprecedented 2D → 3D metal–organic polyrotaxane framework constructed from cadmium and a flexible star-like ligand

An unprecedented 2D → 3D metal–organic polyrotaxane framework, based on a new star-like tri(4-imidazolylphenyl)amine ligand, has been synthesized and characterized, which represents the first example of 2D → 3D polyrotaxane entangled in a parallel fashion.