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Z. Naturforsch. 2013,
68b, 250 – 256
doi:10.5560/ZNB.2013-2319
Synthesis, Crystal Structures and Fluorescence Properties of Two d10 Metal Coordination Polymers with Flexible Bis(benzimidazolyl)alkane Ligands
1 School of Chemical and Materials Science, Shanxi Normal University, Linfen, 041004, P. R. China
2 College of Chemical Engineering, Hebei United University, Tangshan, 063009, P. R. China
Reprint requests to Prof. Guang-Hua Cui. E-mail:
tscghua@126.com
Received December 12, 2012 / published online March 20, 2013
Two d10 metal coordination polymers with bis-benzimidazole ligands, [(Ag(L1))·NO3 ·4H2O]n (1) and [Cu2(L2)(CN)2]n (2) [L1 = 1,4-bis(benzimidazol-1-yl)butane, L2 = 1,4-bis(5,6-dimethylbenzimidazol-1-yl)butane] have been synthesized hydrothermally and characterized by elemental analysis, IR spectroscopy, thermogravimetric (TG) analysis and single-crystal X-ray diffraction. Compound 1 features a ribbon-like chain structure bridged by L1 ligands, and is ultimately extended into a 2D supramolecular network through two kinds of π-π
stacking interactions. Compound 2 displays a (6,3) wave-like layer in which [Cu6(μ-CN)6(L2)2]n double chains are interconnected by pairs of L2 bridges. The fluorescence properties of the compounds in the solid state at room temperature were investigated.
Key words: Bis-benzimidazole, Crystal Structure, Fluorescence Properties, Supramolecular Network