Synthesis, crystal structure and fluorescence property of 1-D europium complex with 2,3-difluorobenzoate

被引:2
|
作者
Song Jinhao [1 ]
Wu Xiaoshuo [1 ]
Li Xia [1 ]
机构
[1] Capital Normal Univ, Dept Chem, Beijing 100048, Peoples R China
关键词
europium complex; 2,3-difluorobenzoic acid; crystal structure; fluorescence; rare earths; LANTHANIDE COMPLEXES; LUMINESCENCE; ACID;
D O I
10.1016/S1002-0721(08)60395-6
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
A new chain europium complex [Eu(2,3-DFBA)(3)center dot(H2O)(2)](n)(2,3-DFBA=2,3-difluorobenzoate) was synthesized by solvent method. X-ray single-crystal diffraction analysis revealed that Eu3+ ions were linked through 2,3-DFBA groups via alternate bidentate-bridging and tridentate chelating-bridging coordination modes to form a one-dimensional (1-D) polymeric chain. Each Eu3+ ion is eight-coordinated by six O atoms of five 2,3-DFBA ligands; and two water molecules. The abundant hydrogen bonds between chains resulted in a two-dimensional (2-D) network structure. The titled complex crystallizes in monoclinic system, space group P2(1)/c, with a=0.79977(2) nm, b=2.99156(7) nm, c=0.93260(2) nm, and beta=100.691(1)degrees. The complex exhibited strong red fluorescence under ultraviolet light, and the D-5(0)-> F-7(j)(j=0 similar to 4) transitions of Eu3+ ion were observed in its emission spectrum.
引用
收藏
页码:1092 / 1095
页数:4
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