2,4-二氧乙酸苯甲酸镉配合物的合成、晶体结构、荧光性质及与DNA作用 |
Synthesis, Crystal Structures, Luminescent Properties and DNA-Binding of Cadmium Complexes with 2,4-Bis-oxyacetate-benzoic Acid |
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摘要: 以自行设计合成的兼有刚柔两性的芳香三羧酸2,4-二氧乙酸苯甲酸(H3BOABA)为第一配体,菲咯啉(phen)为第二配体,合成了2个配合物[Cd3(BOABA)2(phen)2] (1),[CdNa(BOABA)(phen)] (2)。用元素分析、红外光谱、热重分析等进行表征;用单晶X-衍射方法测定了配合物的晶体结构,配合物1是三金属簇的一维双链,phen修饰在两侧,大量的弱π-π堆积作用使得分子呈现出二维平面结构,配合物2是由镉、钠2种金属离子构成的(3,4,7)-连接的二维平面结构。用溴化乙锭荧光探针初步研究了它们与DNA作用的强度和模式;此外对它们的固体荧光性质进行了研究,2种配合物均表现出了较好的发光性质。 |
关键词: 镉配合物 2,4-二氧乙酸苯甲酸 晶体结构;DNA 荧光性质 |
基金项目: 浙江省自然科学基金(No.LY12B01003)和浙江省教育厅项目(No.ZC200803697)资助项目。 |
Abstract: Two complexes [Cd3(BOABA)2(phen)2] (1), [CdNa(BOABA)(phen)] (2) were designed and synthesized under solvothermal and hydrothermal reactions by using 2,4-bis-oxyacetate-benzoic acid(H3BOABA) which possesses one rigid carboxyl group and two flexible carboxyl groups as first ligand, phenanthroline (phen) as auxiliary ligand and characterized by elemental analysis, IR spectra, TG. Crystal structures of the complexes were determined by single crystal X-ray diffraction method. Complex 1 is one dimensional double-edge construction bases on three nuclear metal clusters, that π-π stacking results two dimensional plane. Complex 2 is a unique two dimensional(3,4,7)-connected plane, consisting of Cd(Ⅱ) and Na(Ⅰ). The interaction between the complex and DNA was studied by EtBr fluorescence probe. Photoluminescence studies indicate that the complexes may be excellent candidates for potential photoactive materials. CCDC: 883095, 1; 883093, 2. |
Keywords: Cd complex 2,4-bis-oxyacetate-benzoic acid crystal structure DNA-binding photoluminescence |
投稿时间:2014-04-22 修订日期:2014-05-22 |
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余玉叶,石沛,盛秀冬,张毅,陈小菊,赵国良.2,4-二氧乙酸苯甲酸镉配合物的合成、晶体结构、荧光性质及与DNA作用[J].无机化学学报,2014,30(10):2332-2340. |
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