A new 2D cobalt(II) coordination polymer constructed from 1,2,4,5-benzenetetracarboxylate and flexible bis(benzimidazole) ligands

A new 2D cobalt(II) coordination polymers namely {[Co2(btec)(L)2]∙4H2O}n (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 \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$P\overline 1 $$\end{document}, a = 12.198(2) Å, b = 15.0750(2) Å, c == 15.194(2) Å, α = 77.420(2)°, β = 77.872(2)°, γ = 85.538(2)°, V = 2664.2(5) Å3, Z = 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.