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Original Articles

Two- and three-dimensional coordination complexes constructed by 2-(1H-imidazol-1-methyl)-1H-benzimidazole: syntheses, structures, and fluorescent properties

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Pages 1980-1991 | Received 19 Feb 2014, Accepted 16 May 2014, Published online: 08 Jul 2014
 

Abstract

Two new complexes, {[Zn(imb)(SO4)]·H2O}n (1) and {[Cd2(imb)2(SO4)2(H2O)]·CH3OH}n (2) (imb = 2-(1H-imidazol-1-methyl)-1H-benzimidazole), have been solvothermally synthesized. Single-crystal X-ray diffraction shows that 1 displays a 2-D (4,4) network, which is further extended to a 3-D supramolecular structure by hydrogen bonding interactions. Complex 2 exhibits a 3-D framework with (3,5)-connected (42·6)2(42·65·83)2 topology. The results indicate that changing metal ions can influence the coordination modes of sulfate, and then affect the structures of the complexes. In addition, IR and UV–vis spectra, powder X-ray diffraction patterns, thermogravimetric analyses, and fluorescent properties of both complexes have been investigated.

Graphical Abstract

Two new complexes, {[Zn(imb)(SO4)]·H2O}n (1) and {[Cd2(imb)2(SO4)2(H2O)]·CH3OH}n (2), have been synthesized and characterized by single crystal X-ray diffraction. Additionally, their UV–vis, IR, Thermogravimetric analyses and fluorescent properties are also investigated.

Funding

We gratefully acknowledge the financial support by the National Natural Science Foundation of China [grant number J1210060].

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