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Synthesis, Crystal Structure and Characterization of Zn(II) Complex Constructed from 2,2'-Bisbenzimidazole
Corresponding Author(s) : Yan Yang
Asian Journal of Chemistry,
Vol. 26 No. 22 (2014): Vol 26 Issue 22
Abstract
A new complex associated with Zn ion, [Zn(OH-H2Bdc)(Bibim)]n (1), (OH-H2Bdc = 5-hydroxyisophthalic acid, Bibim = 2,2'-bisbenzimidazole) has been synthesized under hydrothermal conditions and characterized by elemental analysis, FT-IR spectroscopy, TG/DTG and fluorescence spectra. X-ray crystallographic studies reveal that complex [Zn(OH-H2Bdc)(Bibim)]n (1) crystallizes in a monoclinic space group P21/n, each Zn atom is five-coordinated and adopts a distorted square-pyramidal coordination environment. There exists a 2-D supramolecular network linked by hydrogen bonds and face-to-face p-p interactions between adjacent benzene rings (3.768 Å) and imidazole rings (3.742 Å). A three-dimensional supramolecular network is further constructed through p-p stacking and hydrogen-bonding interactions between the helices. The TG/DTG shows that it collapsed with total loss of 84.8 (calc. 86.3 %). Blue fluorescent emission of the complex was determined at 506 nm in the solid state.
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B.L. Chen, S.C. Xiang and G.D. Qian, Acc. Chem. Res., 43, 1115 (2010); doi:10.1021/ar100023y.
O.K. Farha, C.D. Malliakas, M.G. Kanatzidis and J.T. Hupp, J. Am. Chem. Soc., 132, 950 (2010); doi:10.1021/ja909519e.
J.R. Li, R.J. Kuppler and H.C. Zhou, Chem. Soc. Rev., 38, 1477 (2009); doi:10.1039/b802426j.
J.P. Zhang and X.M. Chen, J. Am. Chem. Soc., 131, 5516 (2009); doi:10.1021/ja8089872.
J.Q. Liu, Y.Y. Wang, Y.N. Zhang, P. Liu, Q.Z. Shi and S.R. Batten, Eur. J. Inorg. Chem., 147 (2009); doi:10.1002/ejic.200800898.
J.L. Du, T.L. Hu, J.R. Li, S.M. Zhang and X.H. Bu, Eur. J. Inorg. Chem., 1059 (2008); doi:10.1002/ejic.200700924.
F.Y. Cui, K.L. Huang, Y.Q. Xu, Z.G. Han, X. Liu, Y.N. Chi and C.W. Hu, CrystEngComm, 11, 2757 (2009); doi:10.1039/b907606a.
L. Liu, H. Zhang, X.G. Meng, J. Yin, D.F. Li and C.L. Liu, Biomaterials, 31, 1380 (2010); doi:10.1016/j.biomaterials.2009.10.056.
H.K. Liu and P.J. Sadler, Acc. Chem. Res., 44, 349 (2011); doi:10.1021/ar100140e.
Y. Yang, M.X. Tan, X. Li, X.M. Chen, G.Q. Chen, R.H. Qin and W.G. Duan, J. Mol. Struct., 975, 372 (2010); doi:10.1016/j.molstruc.2010.05.011.
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G.M. Sheldrick, SHELXL-97, Program for Crystal Structure Refinement, University of Göttingen, Göttingen, Germany (1997).