摘要: A new coordination polymer {[Ba(L)(H₂O)₅]·H₂O}_n (1, H₂L=3,3'-((((ethane-1,2-diylbis(oxy))-bis(2,1-phenylene))bis(methylene))bis(oxy))dibenzoic acid) has been synthesized under evaporation process and characterized by elemental analysis, IR spectra, TG analysis, fluorescence spectrum, powder X-ray diffraction analysis and single-crystal X-ray diffraction. Complex 1 crystallizes in the monoclinic system, space group P2₁/c, with a=20.918(5), b=7.4539(2), c=20.168(5)Å, b=95.486(2)°, V=3130.1(1)ų, Z=4, C₃₀H₃₄BaO₁₄, M_r=755.91, D_c=1.604 g/cm³, F(000)=1528, μ=1.34 mm^-1, the final R=0.0404 and wR=0.0676 for all data. Single-crystal X-ray structural reveals that the Ba(Ⅱ) ion adopts a nine-coordinated distorted tricapped trigonal prism coordination geometry. Adjacent Ba(Ⅱ) ions are linked by one μ²-L^2-anion and two (μ²-H₂O) water molecules to generate an infinite 1D zigzag chain structure. Then these chains are further linked into a 2D layer supramolecular architecture through O-H…O hydrogen bonds. Luminescent property and thermal stability of complex 1 were investigated.