کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1410619 | 1501873 | 2008 | 7 صفحه PDF | دانلود رایگان |

Three Europium complexes: [Eu(L1)3(H2O)2]2 (L1 = (E)-3-(2– hydroxyl-phenyl)-acrylic acid) (1), [[Eu(L2)3(H2O)]·H2O (L2 = (E)-3-(3-hydroxyl-phenyl)-acrylic acid) (2), and [[Eu(L3)3(H2O)2] (L3 = (E)-3-(4-hydroxyl-phenyl)-acrylic acid) (3) were synthesized and structurally analyzed by IR, elemental analysis, and the single-crystal X-ray diffraction method. Complex 1 adopts a dinuclear structure, while complexes 2 and 3 are a one-dimensional coordination polymer. The complex 2 possesses a helical H-bonding between the adjacent two chains with homochirality in crystalline solid state. All the complexes form a 3D supramolecular framework by O–H···O hydrogen bonding and π–π interaction in the crystal lattices. The solid photoluminescence of the three complexes has also been investigated at room temperature.
Journal: Journal of Molecular Structure - Volume 891, Issues 1–3, 26 November 2008, Pages 298–304