| 两个由两性二酸配体构筑的Cd(Ⅱ)低维配合物的合成、结构及荧光性质 |
| Two Low Dimensional Cd(Ⅱ) Coordination Polymers Constructed from Zwitterionic Dicarboxylate Ligand: Syntheses, Structures, and Fluorescent Properties |
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| 摘要: 利用合成的两性离子二酸配体1-(4-carboxylatobenzyl)pyridinium-4-carboxylate(HL),通过调变合成条件,制备了2个低维的配合物{Cd(L)2·4H2O}n(1),和{[Cd(L)(N3)]·3H2O}n(2),并对其进行了元素分析(EA)、红外光谱(IR)、热重(TG)、荧光光谱及X-射线单晶衍射测定。分析结果显示化合物1中八配位的Cd(Ⅱ)离子被4个L配体连接形成一维链状结构。而化合物2中六配位的Cd(Ⅱ)离子被双羧基-叠氮三重桥联形成二维层状结构。固体荧光测试表明配体的配位方式明显影响其荧光发射。 |
| 关键词: 两性离子配体 晶体结构 配位聚合物 荧光 Cd(Ⅱ)配合物 |
| 基金项目: 上海市自然科学基金(No.14ZR1447900),校复合材料学科建设项目(No.10210Q140001)资助。 |
| Abstract: By controllable syntheses, two low dimensional Cd(Ⅱ) complexes with the newly zwitterionic dicarboxylate ligand 1-(4-carboxylatobenzyl)pyridinium-4-carboxylate (HL), {Cd(L)2·4H2O}n(1), and {[Cd(L)(N3)]·3H2O}n(2) have been synthesized and structurally characterized by IR, elemental analyses, single-crystal X-ray diffraction. In compound 1, the eight-coordinated Cd(Ⅱ) ions are chelated by four equivalent L in a bis(chelating) mode, forming a one-dimensional coordination polymer structure. In 2, six-coordinated Cd(Ⅱ) ions are triple bridged by two carboxylate groups and an azide ion into 1D uniform [Cd(N3)(OCO)2]n chains, which are further interlinked through the cationic N-benzylpyridinium backbones of the L ligands into 2D sheet. Interestingly, the fluorescence measurements show that all compounds exhibit intense blue emission in the solid state, and the emission bands are correlated to the coordination modes of the L ligand. CCDC:1031439, HL; 1031440, 1; 1031441, 2. |
| Keywords: zwitterionic ligand crystal structure coordination polymers fluorescence cadmium(Ⅱ) complex |
| 投稿时间：2015-01-27 修订日期：2015-06-04 |
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| 丁芳芳,张娜,张建勇,王敏,高恩庆.两个由两性二酸配体构筑的Cd(Ⅱ)低维配合物的合成、结构及荧光性质[J].无机化学学报,2015,31(10):1929-1937. |
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