Abstract
Two new coordination polymers [Zn(ip)(2,5-tda)(H2O)2] n (1) and [Zn2(ip)2(5-npa)2] n (2) (2,5-tda = thiophene-2,5-dicarboxylic acid, ip = 1H-imidazo[4,5-f][1,10]-phenanthroline and 5-npa = 5-Nitroisophthalic acid) were synthesized and characterized by IR, elemental analysis, PXRD and X-ray diffraction. Single-crystal X-ray analyses revealed that 1 and 2 demonstrate a 1D chain structure. Complex 1 was bridged by 2,5-tda ligands in a μ1 − η1:η0/μ1 − η1:η0 coordination mode, and further extended into a 2D supramolecular structure by hydrogen bonding and π···π interactions. In 2, the 5-npa ligand acts as a bridging moeity, exhibiting μ1 − η1:η1/μ1 − η1:η0 and μ1 − η1:η0/μ1 − η1:η0 coordination modes to link metal ions to form a 1D chain. The chains are further connected via hydrogen bonding interactions into a 2D supramolecular structure. The luminescent properties for 1 and 2 were investigated in the solid state at room temperature.
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Acknowledgments
The authors gratefully acknowledge financial support from the National Natural Science Foundation of China (No. 20971018), the National Natural Science Foundation of Shandong Province (No. ZR2010BL010) and Science & Technology Program of Shandong Province (No. 2010GWZ20251).
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Zhang, X., Cheng, K. Preparation, Crystal Structures and Photoluminescence of Two New Zinc Complexes Based on 1H-Imidazo[4,5-f][1,10]-phenanthroline and Auxiliary Ligands. J Inorg Organomet Polym 22, 1413–1418 (2012). https://doi.org/10.1007/s10904-012-9722-8
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DOI: https://doi.org/10.1007/s10904-012-9722-8