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2,2′-联苯二甲酸的两个稀土金属配合物的合成、结构分析及性质研究 被引量:1

Synthesis,Structure and Properties of Two New Rare Earth Metal Complexes of 2,2′-Biphenyldicarboxylic Acid
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摘要 在水热条件下用2,2′-联苯二甲酸(H2BPDA)分别与Nd2O3和Dy2O3反应合成了两个一维配合物[Nd(BPDA)1.5(H2O)](1)和[Dy(BPDA)1.5(H2O)](2)。通过元素分析、红外光谱及单晶X射线衍射对配合物进行了表征。结构分析显示,这两种配合物是同构的,同属单斜晶系,C2/c空间群,且是一维链式结构。晶体结构显示,Ln(Ⅲ)的中心采用了变形的四方反棱柱和四方棱柱的几何结构。2个羧基分别采用了μ2-η1∶η1和μ2-η1∶η1两种配位模型。BPDA2-作为μ3-桥连接Ln(Ⅲ)的中心形成一维链式结构。一维链进一步通过C-H…π的相互作用连接到一起形成二维和三维结构。同时研究了配合物1的热稳定性及2的荧光性质。 The self-assembly of 2,2'-Biphenyldicarboxylic acid (H2BPDA) with Nd2O3 and Dy2O3 under hydrothermal conditions gives rise to two 1D coordination polymers, [Nd (BPDA)Ls (H2O)] (1) and [Dy (BPDA) 1.5 (H2O)] (2), which were characterized by elemental analysis, IR and single-crystal X-ray diffraction. Structural determination reveals that these two complexes are isostructural and crystal in monoclinic space group C2/c and have 1D chain-like architecture. The crystal structure reveals that Ln (III) centers adopt distorted square anti-prism and square prism geometries. Carboxylate groups take μ2-η1:η1 and μ2-η1:η1 two coordina- tion models,respectively. The BPDA2acts as a tt3 bridge connecting Ln(III) centers to result in a one dimensional chain structure. 1D chains of 1 and 2 are further connected together to form 2D and 3D structure through C-H…π interactions. The thermal stable property of complex 1 and fluorescent property of 2 were studied.
出处 《宿州学院学报》 2012年第11期15-19,共5页 Journal of Suzhou University
基金 安徽省教育厅自然科学研究重点项目"金属有机配位聚合物的自组装 性质研究及应用"(KJ2012A266) 宿州学院科研平台开放课题"合成金属有机配合物及用其制备纳米复合金属氧化物电极的应用"(2011YKF03)
关键词 稀土配合物 荧光性 热稳定性 羧基 rare earth complex fluorescence thermal stability carboxylate group
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