| 苯甲酸与含氮配体构筑的两种铅配合物的水热合成、结构与性质研究(英文) |
| Hydrothermal Syntheses, Crystal Structures and Properties of Two Lead Compounds with Benzoic Acid and N-Donor Ligands |
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| 摘要: 用水热合成方法得到了2个二价铅配合物[Pb(BA)2(phen)]·(HBA) (1)及[Pb(2，2′-bipy)(BA)(NO3)]n(2)(HBA=benzoic acid; phen=1，10-phenanthroline；2，2′-bipy=2，2′-bipyridine)，对它们进行了元素分析、红外光谱、荧光光谱、粉晶衍射及热分析表征，并通过X-射线单晶衍射测定了配合物的单晶结构。X-射线单晶结构解析表明，配合物1与2均属三斜晶系，P1 空间群。化合物1中，弱Pb…O相互作用、分子间氢键及π…π堆积作用共同构筑了配合物1的三维框架结构。铅的6s孤电子具有立体化学活性，使配位键分布于半球型区域。化合物2中，相邻的PbⅡ离子通过螯合-桥联的硝酸根联结成一维链状结构，广泛存在的π…π堆积作用将邻近的一维链堆积成三维超分子结构。化合物2中的6s孤对电子未显示出立体化学活性，其配位键近似分布于全球型区域。 |
| 关键词: 铅配合物 苯甲酸 2，2′-联吡啶 邻菲咯啉 晶体结构 |
| 基金项目: |
| Abstract: Two coordination compounds [Pb(BA)2(phen)]·(HBA) (1) and [Pb(2,2′-bipy)(BA)(NO3)]<i>n (2) (HBA: benzoic acid; phen: 1,10-phenanthroline; 2,2′-bipy: 2,2′-bipyridine) have been synthesized by hydrothermal methods and characterized by elemental analysis, IR spectra, fluorescence, powder X-ray diffraction and thermal analysis, and the crystal structures were determined by single-crystal X-ray diffraction. Both compounds crystallize in the Triclinic system, space group P1. In compound 1, the weak Pb…O interactions, intermolecular H-bond and π…π stacks construct the complex into stable 3D framework. The lone pairs of electrons are clearly active and the coordination sphere of PbⅡ ions is hemidirected. In compound 2, the adjacent PbⅡ ions are linked by nitrate groups in the chelating-bridging coordination mode, resulting in a 1D chain structure. The extensive π…π interactions connect the neighboring 1D chains into 3D supramolecular structure. The lone pairs of PbⅡ are inactive and the coordination sphere is holodirected in compound 2. CCDC: 803044, 1; 803057, 2. |
| Keywords: lead complex benzoic acid 2,2′-bipy phen crystal structure |
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| 戴 俊,杨 娟,陈 曦.苯甲酸与含氮配体构筑的两种铅配合物的水热合成、结构与性质研究(英文)[J].无机化学学报,2011,27(8):1617-1624. |
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