Synthesis, crystal structure and properties of a samarium nitrate complex with 2-idobenzoic acid and 2,2’-bipyridine
来源期刊：Journal of Rare Earths2011年第4期
论文作者：雷智鸿 赵凯 顾雅琨 李夏
文章页码：303 - 307
摘 要：A complex [Sm（2-IBA）2（2,2’-bipy）（NO3）]2 （2-HIBA=2-idobenzoic acid; 2,2’-bipy=2,2’-bipyridine） was synthesized by solvent method and characterized by X-ray single-crystal diffraction. The complex crystallized in triclinic crystal system, Pī space group, with a= 0.97873（3） nm, b=1.28124（3） nm, c=1.29174（3） nm, α=108.3740（10）o, β=111.7340（10）o, γ=101.7870（10）o. The complex was the centrosymmetric binuclear molecule, in which two Sm3+ ions were connected by four 2-IBA ligands. Two of the 2-IBA ligands were in a bidentate bridging mode and the other two were in a tridentate bridging mode. Sm3+ ion was also coordinated to one chelating NO3- group and one 2,2’-bipy molecule. The 2D supramolecular network formed through weak I…I interactions and π…π stacking interactions. The fluorescent emission peaks at 562, 595, and 642 nm corresponded to the 4G5/2→6F5/2, 4G5/2→6F7/2, and 4G5/2→6F9/2 transitions of Sm3+ ion, respectively.
雷智鸿，赵凯，顾雅琨，李夏
Department of Chemistry, Capital Normal University
摘 要：A complex [Sm（2-IBA）2（2,2’-bipy）（NO3）]2 （2-HIBA=2-idobenzoic acid; 2,2’-bipy=2,2’-bipyridine） was synthesized by solvent method and characterized by X-ray single-crystal diffraction. The complex crystallized in triclinic crystal system, Pī space group, with a= 0.97873（3） nm, b=1.28124（3） nm, c=1.29174（3） nm, α=108.3740（10）o, β=111.7340（10）o, γ=101.7870（10）o. The complex was the centrosymmetric binuclear molecule, in which two Sm3+ ions were connected by four 2-IBA ligands. Two of the 2-IBA ligands were in a bidentate bridging mode and the other two were in a tridentate bridging mode. Sm3+ ion was also coordinated to one chelating NO3- group and one 2,2’-bipy molecule. The 2D supramolecular network formed through weak I…I interactions and π…π stacking interactions. The fluorescent emission peaks at 562, 595, and 642 nm corresponded to the 4G5/2→6F5/2, 4G5/2→6F7/2, and 4G5/2→6F9/2 transitions of Sm3+ ion, respectively.
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