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Three Silver(I) Coordination Polymers Constructed from Flexible Bis(benzimidazole) and Carboxylates Ligands
Author(s) -
Wang Xiao Xiao,
Liu Yong Guang,
Van Hecke Kristof,
Goltsev Andrey,
Cui Guang Hua
Publication year - 2015
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201400597
Subject(s) - chemistry , benzimidazole , isophthalic acid , stacking , crystallography , hydrogen bond , supramolecular chemistry , coordination polymer , stereochemistry , catalysis , crystal structure , molecule , organic chemistry , polyester , terephthalic acid
Under hydrothermal conditions, three new Ag I coordination polymers, [Ag(L1)(Hmip)] n ( 1 ), [Ag(L2) 0.5 (ndc) 0.5 ] n ( 2 ), and {[Ag(L3) 0.5 (Htbi)] · 0.25H 2 O} n ( 3 ) [H 2 mip = 5‐methylisophthalic acid, L1 = 1,4‐bis(2‐methylbenzimidazol‐1‐ylmethyl)benzene, H 2 ndc = 2,6‐naphthalenedicarboxylic acid, L2 = 1,3‐bis(2‐methylbenzimidazol‐1‐ylmethyl)benzene, H 2 tbi = 5‐ tert ‐butyl isophthalic acid, L3 = 1,4‐bis(5,6‐dimethylbenzimidazole)butane] were synthesized by employing flexible bis(benzimidazole) and dicarboxylic acid ligands. Polymer 1 displays a 2D 4‐connected 4L2 underlying net topology with the point symbol of (6 5 .8) in standard representation. Compound 2 possesses a 2D uninodal 4‐connected Shubnikov tetragonal plane net (sql) based on a dinuclear Ag I clusters with the point symbol (4 4 .6 2 ), which is further extended into a 3D supramolecular framework by π–π interactions. Compound 3 possesses dinuclear molecular complex groups, which form chains by weak Ag–O (2.6 Å) coordination bonds, and further assembled into a 2D supramolecular layer by hydrogen bonds and π–π stacking interactions. These complexes exhibit intense fluorescent emissions in solid state. UV/Vis diffuse reflection spectra and the excellent catalytic activity for the degradation of the congo red azo dye in a Fenton‐like process are discussed.