Parallel chain polyrotaxane, layer, and diamondoid divalent metal coordination polymers containing para aromatic dicarboxylate and bis(4-pyridylmethyl)piperazine ligands

Cd(tere)(4-bpmp)(H2O)n (1, tere = terephthalate, 4-bpmp = bis(4-pyridylmethyl)piperazine) has a simple non-interpenetrated diamondoid network, while [Zn2(tere)(4-bpmp)2Cl2]n (2) manifests an exceptionally rare 1D + 1D → 1D parallel interpenetrated threaded-loop polyrotaxane structure.