Synthesis, Structure and Luminescent Property of an Europium(Ⅲ) Coordination Polymer  

作　　者：叶燕珠 林深 吴新建 

机构地区：[1]Department of Science Research and Training,Fujian Institute of Education [2]College of Chemistry and Chemical Engineering,Fujian Normal University

出　　处：《Chinese Journal of Structural Chemistry》2014年第11期1649-1654,共6页结构化学（英文）

基　　金：financially supported by Foundation of Fujian Educational Committee(JA14348);the National Natural Science Foundation of China(No.21171037)

摘　　要：A novel europium（Ⅲ） coordination polymer, [Eu3（pydc）3（SO4）（H2O）5（ox）0.5]·3H2O（1, H2ox = oxalic acid, H2 pydc = pyridine-2,6-dicarboxylic acid）, has been synthesized hydrothermally from the self-assembly of lanthanide ions（Eu3＋） with the flexible oxalic acid and the rigid pyridine-2,6-dicarboxylic acid ligands, respectively. It crystallizes in the triclinic system, space group P1 with a = 11.225（4）, b = 12.390（5）, c = 13.752（5）A, α = 89.228（7）, β = 71.142（6）, γ = 75.552（6）°, Dc = 2.317 g/cm^3, μ = 5.480 mm^-1, F（000） = 1150, Z = 2, the final R = 0.0351 and w R = 0.0949 for 8782 observed reflections with I 〉 2σ（I）. Structural analysis reveals that complex 1 exhibits a three-dimensional metal-organic framework via π-π stacking interactions. In addition, complex 1 displays a red fluorescence emission in the solid state at room temperature, which corresponds to the 5D0 → 7F2 transition of Eu3＋ ions.A novel europium（Ⅲ） coordination polymer, [Eu3（pydc）3（SO4）（H2O）5（ox）0.5]·3H2O（1, H2ox = oxalic acid, H2 pydc = pyridine-2,6-dicarboxylic acid）, has been synthesized hydrothermally from the self-assembly of lanthanide ions（Eu3＋） with the flexible oxalic acid and the rigid pyridine-2,6-dicarboxylic acid ligands, respectively. It crystallizes in the triclinic system, space group P1 with a = 11.225（4）, b = 12.390（5）, c = 13.752（5）A, α = 89.228（7）, β = 71.142（6）, γ = 75.552（6）°, Dc = 2.317 g/cm^3, μ = 5.480 mm^-1, F（000） = 1150, Z = 2, the final R = 0.0351 and w R = 0.0949 for 8782 observed reflections with I 〉 2σ（I）. Structural analysis reveals that complex 1 exhibits a three-dimensional metal-organic framework via π-π stacking interactions. In addition, complex 1 displays a red fluorescence emission in the solid state at room temperature, which corresponds to the 5D0 → 7F2 transition of Eu3＋ ions.

关 键 词：coordination polymer LANTHANIDE luminescent property 

分 类 号：O634[理学—高分子化学]