1D + 1D → 1D Polyrotaxane, 2D + 2D → 3D Interpenetrated, and 3D Self-Penetrated Divalent Metal Terephthalate Bis(pyridylformyl)piperazine Coordination Polymers

Divalent metal coordination polymers containing terephthalate (tere) and bis(4-pyridylformyl)piperazine (bpfp) show diverse and interesting two-dimensional (2D) interpenetrated, three-dimensional (3D) self-penetrated, or one-dimensional (1D) polyrotaxane topological features. Isostructural {[M(tere)(bpfp)(H2O)2]•4H2O}n phases (1, Zn; 2, Co) exhibit mutually inclined 2D + 2D → 3D interpenetration of gridlike layers. {[Cd4(tere)4(bpfp)3(H2O)2]·8H2O}n (3) possesses a novel 3,4,8-connected trinodal self-penetrated network with (4.62)2(4261687103)(4264)2 topology. [Zn2Cl2(tere)(bpfp)2]n (4) is the first example of a 1D + 1D → 1D polyrotaxane coordination polymer, to the best of our knowledge. Metal coordination geometry plays a crucial role in dictating the overall dimensionality in this system. Thermal decomposition behavior and luminescent properties of the d10 configuration metal derivatives are also presented herein.