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;（L）;（bpp）(H;O);]n(H;L = 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） ?, V = 3239.0（3） ?;, Z = 4, D;= 1.684 g/cm;, M;= 821.38, Dc = 1.684 g/cm;, μ = 1.683 mm;, 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.