Self-assembly of Pd(II) and Pt(II) complexes with 2,2′-bipyridine-3,3′-16-crown-4 containing porous channels through anion⋯π interactions

Two complexes, [M(bpy-CE)(NO3)2] [M = Pd(II), Pt(II); bpy-CE = 2,2′-bipyridine-3,3′-16-crown-4], were synthesized and characterized by the X-ray diffraction study, and their isomorphous crystal structures confirm the formation of interesting porous frameworks with channel diameters of ca. 6.0 Å possibly through anion⋯π interactions.