title: Spectroscopic properties and the catalytic activity of new organo-lead supramolecular coordination polymer containing quinoxaline.
abstract: The 3D-supramolecular coordination polymer (SCP) (3)∞[ Cu2(CN)3(Me3Pb)(qox)], 1, as the first example of the CuCN SCP containing the (Me3Pb) fragment, was explored to investigate its catalytic and photo-catalytic activities. The structure of 1 contains two chemically identical but crystallographically different [Cu2(CN)3⋅Me3Pb⋅qox]2 units with four Cu(I) sites assuming distorted TP-3 geometry. Two non-linear chains of equal abundance are formed producing corrugated parallel chains which are connected laterally by quinoxaline creating 2D-layers which are arranged parallel in an (AB⋯AB⋯AB)n fashion forming 3D-network. IR, mass, electronic absorption and fluorescence spectra are also investigated. The SCP 1 is diamagnetic and exhibits good catalytic and photo-catalytic activities for the degradation of methylene blue (MB). The reaction is first order with respect to MB dye. The irradiation of the reaction with UV-light enhanced the rate of MB mineralization. The efficiency of recycled the 1 and the mechanism of degradation of MB dye were investigated.
authors.affiliation: Chemistry Department, Faculty of Science, Tanta University, Tanta, Egypt. Electronic address: safaaetaiw@hotmail.com.
authors.forename: Safaa El-din H
authors.initials: Sel-D
authors.lastname: Etaiw
authors.affiliation: Faculty of Education (Khourma), Chemistry Department, Taif University, Saudi Arabia.
authors.forename: Safaa N
authors.initials: SN
authors.lastname: Abdou
mesh_terms: D002384:Catalysis / Q000528:radiation effects; D056831:Coordination Complexes / Q000737:chemistry*; D018360:Crystallography, X-Ray; D004583:Electrons; D006860:Hydrogen Bonding; D007700:Kinetics; D007854:Lead / Q000737:chemistry*; D013058:Mass Spectrometry; D008968:Molecular Conformation; D010782:Photolysis / Q000528:radiation effects; D011108:Polymers / Q000737:chemistry*; D011810:Quinoxalines / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D013055:Spectrophotometry, Infrared; D014466:Ultraviolet Rays
chemical_list: D056831:Coordination Complexes; D011108:Polymers; D011810:Quinoxalines; D007854:Lead
keywords: Catalytic activity; Copper cyanide; Luminescence properties; Organolead; Quinoxaline; Supramolecular polymer