A NEW 2D COBALT(II) COORDINATION POLYMER CONSTRUCTED FROM 1,2,4,5-BENZENETETRACARBOXYLATE AND FLEXIBLE bis(BENZIMIDAZOLE) LIGANDS
X. Du, R. Yang, X.X. Wang, G.H. Cui
Hebei United University, Tangshan, Hebei Province, P. R. China
Keywords: 1,2,3,4,5-benzenetetracarboxylate, bis(benzimidazole), cobalt(II), fluorescence property
Abstract
A new 2D cobalt(II) coordination polymers namely {[Co<sub>2</sub>(btec)(L)<sub>2</sub>]×4H<sub>2</sub>O}<sub><i>n</i></sub> (1), where btec = 1,2,4,5-benzenetetracarboxylate and L = 1,3-bis(5,6-dimethylbenzimidazol-l-yl)-2-propanol, are hydrothermally synthesized and characterized by elemental analyses, IR spectroscopy, and single crystal X-ray diffraction analyses. The structure analysis indicates that the compound belongs to the triclinic system, space group <i>P</i>ī, <i>a</i> = 12.198(2) Å, <i>b</i> = 15.0750(2) Å, <i>c</i> = 15.194(2) Å, α = 77.420(2)°, β = 77.872(2)°, γ = 85.538(2)°, <i>V</i> = 2664.2(5) Å<sup>3</sup>, <i>Z</i> = 2. The complex possesses a binodal (3,4)-connected two-dimensional layered structure bridged by btec and L ligands. The fluorescence and catalytic properties of the complex are also investigated.
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