甲基取代的苯并咪唑构筑的配合物合成及表征

发布时间：2018-08-28 18:48

【摘要】：配合物结构新奇、种类繁多、性能优良,因此在作为光学,磁学,生物医药,催化材料方面具有潜在的应用价值。苯并咪唑环可以引入不同种类的取代基、间隔体的选择多样,从而成为许多实验室构筑配合物的首选配体。在苯并咪唑环2位引入甲基修饰后,可以增强配体的溶解性且具有优良的生物活性,是重要的药物中间体,具有广泛的药用价值;5,6-二甲基苯并咪唑是合成VB12的前驱体。因此,甲基取代的苯并咪唑类配体构筑的配合物备受瞩目。设计合成了3种2-甲基取代的双苯并咪唑类配体和5种5,6-二甲基取代的双苯并咪唑类配体。并在水热条件下,用上边合成的8种甲基取代的双苯并咪唑类配体分别与金属盐、羧酸配体混配,得到了10个新型的配合物。配合物1为三重互穿的金刚石(dia)结构;配合物2,5,6,7都是(4,4)网格结构,但是网格结构的边长各异,这是所用配体的柔性不同引起的;3是一维梯形链;4是一个(3,4)-连接的fsh构型的三维网络结构;8是3-节点的hcb拓扑结构;9是一维螺旋链结构;10是双节点的(3,5)-连接的3,5L2拓扑结构。配合物1~10都有较好的热稳定性和荧光性能。在类Fenton反应体系中,配合物1~10降解刚果红染料时,都表现出一定的催化活性,尤其2,7,8去除率达到90%以上。
[Abstract]:Because of their novel structure, various types and excellent properties, the complexes have potential applications as optical, magnetic, biomedical and catalytic materials. Benzimidazole ring can introduce different kinds of substituents, and the spacer can be chosen as the preferred ligand for many laboratory complexes. Methyl modification at the 2 position of benzimidazole ring can enhance the solubility of ligands and have excellent biological activity. It is an important intermediate of medicine. It is a precursor for the synthesis of VB12 with a wide range of medicinal value. Therefore, the complexes constructed by methyl substituted benzimidazole ligands have attracted much attention. Three kinds of 2-methyl-substituted bisbenzimidazole ligands and five kinds of 5-dimethyl-substituted dibenzimidazole ligands were designed and synthesized. Under hydrothermal conditions, 10 new complexes were obtained by mixing eight methyl substituted bisbenzimidazole ligands with metal salts and carboxylic acid ligands respectively. Complex 1 is a triple interpenetrating diamond (dia) structure, and complex 2, 5, 6, 7 is (4 ~ 4) mesh structure, but the side length of the grid structure is different. This is caused by the difference in the flexibility of the ligands used, which is that the one-dimensional trapezoid chain is a (3N4) -connected fsh configuration. The three-dimensional network structure (N8) is the 3-node hcb topology. The 1-D helical chain structure is one dimensional helical chain structure, and it is a two-node (3N5) -connected 3C5L2 topology. The complex 1 / 10 has good thermal stability and fluorescence properties. In the Fenton like reaction system, the complex 1 + 10 showed a certain catalytic activity when it degraded Congo red dye, especially the removal rate of 2 ~ 7 ~ (8) was over 90%.
【学位授予单位】：华北理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：O641.4

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