2015. 56, 5 UDC 548.738 CRYSTAL STRUCTURE, AND FLUORESCENT PROPERTIES OF A 1D Zn(II) COORDINATION POLYMER BASED ON 5-NITRO-1,3-BENZENEDICARBOXYLIC ACID X.-J. Xu School of Chemistry & Chemical Engineering, Yancheng Teachers University, Yancheng, Jiangsu 224002, P.R. China E-mail: xxjyctu@gmail.com Received October, 25, 2014 Revised — June, 12, 2015 A one-dimensional Zn(II) complex [Zn(Im)2(NO2—BDC)]n (1) (Im = Imdazole, NO2—H2BDC = = 5-nitro-1,3-benzenedicarboxylic acid) is synthesized and characterized using single crystal X-ray diffraction, IR spectroscopy and elemental analysis. <...> Single crystal X-ray diffraction analysis reveals that complex 1 is a one-dimensional chain polymer with a Zn Zn separation of 9.6190(2) Е arranged parallel to the (1 0 0) crystal direction. <...> In addition, the luminescence measurements reveal that complex 1 exhibits strong fluorescent emissions in the solid state at room temperature. <...> The design and characterization of coordination polymers remains a popular basic research not only because of the intriguing variety of topologies but also the potential utility in nonlinear optics, magnetism, gas storage, ion exchange, luminescence, second harmonic generation and catalysis, etc. [ 1—3]. <...> It is well known that the choice of the organic ligand is the key factor that influences the construction of coordination polymers with interesting structures [ 4—5]. <...> The most effective and facile approach to coordination polymers is to utilize aromatic dianionic dicarboxylate ligands to link metal ions while providing the structural integrity [ 6—8]. <...> Because of the versatile bridging modes for two carboxyl groups and one nitro group, the 5-nitro-1,3-benzenedicarboxylic acid ligand has been widely used to build coordination polymers [ 9—10]. <...> On the other hand, imdazole is a good building block for the construction of coordination polymers and multidimensional supramolecular networks [ 11, 12 ]. <...> Here, we use 5-nitro-1,3-benzenedicarboxylic acid (NO2—H2BDC) and imdazole (Im), generating a new one dimensional Zn(II) coordination complex [Zn(Im)2(NO2—BDC)]n (1), the crystal structure of which we now report. <...> The IR spectra were obtained <...>