3D-Interpenetrating Frameworks of 3∞[Cu2(CN)4(Me3Pb)2(bpy)] Containing the Rhombic [Cu2(µ3-CN)2] Motifs

Abstract

A supramolecular coordination polymer (SCP), 3 ?[Cu 2 (CN) 4 (Me 3 Pb) 2 (bpy)], 1, based on the Cu n (CN) m building blocks and (Me 3 Pb) ? cation was synthesized in the presence of an auxiliary rigid-planar bipodal 4,4 0 -bipyridine (4,4 0 -bpy) ligand under ambient conditions. The single crystal X-ray diffraction analysis revealed that the Cu(I) sites acquire T-4 geometry and the lead atom, Pb1 assumes TBPY-5 configuration. The rhombic [Cu 2 (l 3 -CN) 2 ] motifs display the essential role as the main building blocks which are interconnected by the (Me 3 Pb) ? cations to form infinite quasi-planer sheets containing the 24-atomic C 8 N 8 Cu 4 Pb 4 rings. These sheets are connected by the bpy ligands producing 3D-network. The wide vacant space present in the framework of 1 is occupied by a second and identical 3D-framework in that each bpy pillar of one framework passes the center of the 24-atomic ring of the complementary framework producing an inextricably interpenetrated structure. The IR, electronic absorption and emission spectra are also investigated. The SCP 1 is an effective catalyst for methylene blue degradation in presence of H 2 O 2 .

X‐ray structure of host‐guest nanosized organotin supramolecular coordination polymer based on cobalt cyanide and quinoxaline as an efficient catalyst for treatment of waste water

“…The nature of organic ligands, metal ions and organotin fragments are important criteria to construct ideal SCP which can be achieved through the parameters such as solvent and temperature. Some very interesting types of SCP including organotin spacers with cyclic structures have been reported using metal ions and bridging ligands containing N‐donors including 4,4′‐bipyridine, 4,4′‐trimethyllenedipyridine, 1,2‐bis(4‐pyridyl)ethane, pyrazine, and related species . Flexible N‐donor ligands adopt diverse conformations during the crystallization process so they can create several modes of the coordination that leads to the structural isomers .…”