| 陈文通,曾锡瑞,陈华龙,黄春芳,易绣光.[Nd(H2O)4(NO3)3]·(4,4'-bipy)2·H2O的合成、晶体结构和荧光[J].井冈山大学自然版,2010,(1): |
| [Nd(H2O)4(NO3)3]·(4,4'-bipy)2·H2O的合成、晶体结构和荧光 |
| Synthesis, Structure and Fluorescence of [Nd(H2O)4(NO3)3]·(4,4'-bipy)2·H2O |
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| DOI： |
| 中文关键词: 晶体结构 荧光 水热反应 稀土化合物 |
| 英文关键词: crystal structure fluorescence hydrothermal,lanthanide complex |
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| 中文摘要: |
| 通过水热反应合成了一种稀土化合物[Nd(H2O)4(NO3)3]·(4,4'-bipy)2·H2O (bipy = 4,4'-联吡啶) (1) ,并对该化合物进行了X-射线单晶结构表征.该化合物属于正交晶系,空间群为P212121,晶胞参数如下:a = 7.1190(5), b = 16.098(1), c = 24.734(1) (A), C20H26N7NdO14, Mr = 732.72, V = 2834.6(3) (A)3, Z = 4, Dc = 1.717 g/cm3, S = 1.201, μ(MoKα) = 1.910 mm-1, F(000) = 1468, R = 0.0449和wR = 0.0722.该化合物具有孤立结构特征,其中稀土原子具有扭曲的双帽四方反棱柱构型.该化合物分子之间通过氢键形成二维波浪层状结构.光致发光研究发现该化合物发射强的紫色光. |
| 英文摘要: |
| [Nd(H2O)4(NO3)3]·(4,4'-bipy)2·H2O (1) (bipy = bipyridine) has been synthesized via hydrothermal reaction and characterized by X-ray diffraction. The crystal belongs to orthorhombic, space group P212121 with a = 7.1190(5), b = 16.098(1), c = 24.734(1)(A), C20H26N7NdO14, Mr = 732.72, V = 2834.6(3) (A)3, Z = 4, Dc = 1.717 g/cm3, S = 1.201, μ(MoKα) = 1.910 mm-1, F(000) = 1468, R = 0.0449 and wR = 0.0722. The crystal structure analysis of 1 reveals that the title complex features an isolated structure, based on two discrete 4,4'-bipy moieties, one lattice water molecule and one neodymium atom in a distorted bicapped square antiprism environment. The 4,4'-bipy moieties and water molecules are held together via hydrogen bonds to form a two-dimensional wavy layer. Photoluminescent investigation reveals that the title complex displays a strong violet-light emission, which maybe originates from π→π* charge-transfer interaction of 4,4'-bipy. IR and elemental analyses are also reported. |
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