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Self‐assembly of Two Cobalt(II) Coordination Polymers Derived from Tetrabromoterephthalate and Flexible Bis(Benzimidazole) Co‐ligands
Author(s) -
Hu JuMeng,
Liu YongGuang,
Van Hecke Kristof,
Cui GuangHua,
Han LiHua
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.201500101
Subject(s) - cobalt , supramolecular chemistry , crystallography , chemistry , hydrogen bond , benzimidazole , benzene , coordination polymer , catalysis , infrared spectroscopy , dicyanamide , crystal structure , polymer , materials science , inorganic chemistry , molecule , organic chemistry , ionic liquid
Two new cobalt(II) coordination polymers, {[Co(L1)(tbta)] · 0.8H 2 O} n ( 1 ) and {[Co(L2)(tbta)] · H 2 O} n ( 2 ) [L1 = 1,1′‐(1,3‐propanediyl)bis(2‐methylbenzimidazole), L2 = 1,2‐bis(2‐methylbenzimidazole‐1‐ylmethyl)benzene, H 2 tbta = tetrabromoterephthalic acid] were obtained under hydrothermal conditions and structurally characterized by single‐crystal X‐ray diffraction methods, IR spectroscopy, TGA, and elemental analysis. The cobalt atoms present similar environments with tetrahedral arrangements in 1 and 2 . The two complexes show a 2D (4,4) coordination network with sql topology. Compound 2 is further extended into a rare 3 , 3 , 4T3 three‐dimensional supramolecular framework by weak C–H ··· O hydrogen bonding interactions. The fluorescence and catalytic properties of the complexes for the degradation of the congo red azo dye in a Fenton‐like process were investigated.