Synthesis, Crystal Structure, and Photoluminescent Property of a 2-Fold Interpenetrating Znic(II) Coordination Polymer with 2,5-Dicarboxylic Acid-3,4-ethylene Dioxythiophene

A three-dimensional coordination polymer, [Zn-2(L)(2)(bpp)(H2O)(2)]n (H2L = 2,5-dicarboxylic acid 3,4-ethylene dioxythiophene, bpp = 1,3-di(4-pyridyl)propane), was synthesized with high yield under solvothermal reaction conditions and structurally characterized by elemental analysis, infrared spectra, thermogravimetric analysis, powder X-ray diffraction and single-crystal X-ray diffraction analysis. It crystallizes in orthorhombic space group Pnma with a = 16.6542(9), b = 18.0868(10), c = 10.7528(5) angstrom, V = 3239.0(3) angstrom(3) , Z = 4, D-c = 1.684 g/cm(3) , M-r = 821.38, D-c = 1.684 g/cm(3) mu= 1.683 mm(-1), F(000) = 1672, R = 0.0466, wR= 0.0933 and S = 1.066. The compound exhibits a three-dimensional structure, which can be simplified into a 2-fold interpenetrated pcu topological network. Moreover, it displays luminescence emission in the solid state at room temperature.