Syntheses,Crystal Structures,and Photocatalytic Activities of Three Copper Coordination Polymers Based on Bis(1H‐imidazol‐4‐yl)benzene/3‐(2‐Pyridyl)pyrazole |
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| Authors: | Xian‐Jiong Yang Qi‐Long Zhang |
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| Affiliation: | Department of Chemistry, Guizhou Medical University, Guiyang, P. R. China |
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| Abstract: | Three copper(II) coordination polymers (CuCPs), namely, Cu0.5(1,4‐bib)(SO4)0.5]n ( 1 ), {Cu(1,3‐bib)2(H2O)] · SO4 · H2O}n ( 2 ), and Cu(bpz)(SO4)0.5]n ( 3 ), were assembled from the reaction of three N‐donors 1,4‐bib = 1,4‐bis(1H‐imidazol‐4‐yl)benzene, 1,3‐bib = 1,3‐bis(1H‐imidazol‐4‐yl)benzene, and Hbpz = 3‐(2‐pyridyl)pyrazole] with copper sulfate under hydrothermal conditions. Their structures were determined by single‐crystal X‐ray diffraction analyses and further characterized by elemental analyses (EA), IR spectroscopy, powder X‐ray diffraction (PXRD), and thermogravimetric analyses (TGA). Structure analyses reveal that complex 1 is a 3D 6‐connected {412 · 63}‐ pcu net, complex 2 is a fourfold 3D 4‐connected 66‐ dia net, whereas complex 3 is a 1D snake‐like chain, which further expanded into 3D supramolecular architectures with the help of C–H ··· O hydrogen bonds. Moreover, the photocatalytic tests demonstrate that the obtained CuCPs are photocatalysts in the degradation of MB with the efficiency is 86.4 % for 1 , 75.3 % for 2 , and 91.3 % for 3 after 2 h, respectively. |
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| Keywords: | Bis(1H‐imidazol‐4‐yl)benzene 3‐(2‐Pyridyl)pyrazole Copper Photocatalytic activities Coordination polymers |
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