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,[Zn2(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)?,V=3239.0(3)?3,Z=4,Dc=1.684 g/cm3,Mr=821.38,Dc=1.684 g/cm3,μ=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.