Cobalt(II) and silver(I) coordination polymers constructed from flexible bis(5,6-dimethylbenzimidazole) and substituted isophthalate co-ligands
作者:Rui Yang、Kristof Van Hecke、Bao Yi Yu、Guang Yue Li、Guang Hua Cui
DOI:10.1007/s11243-014-9829-6
日期:2014.8
Two coordination polymers, [Co(L1)(IPA] n (1) and [Ag(L2)(HMIPA)]·H2O} n (2) (H2IPA = isophthalic acid, L1 = 1,2-bis(5,6-dimethylbenzimidazol-1-ylmethyl)benzene, H2MIPA = 5-methylisophthalic acid, L2 = 1,6-bis(5,6-dimethylbenzimidazol-1-yl)hexane, have been synthesized and characterized by physicochemical and spectroscopic methods, as well as single-crystal X-ray diffraction. In 1, six-coordinated cobalt centers are bridged by L1 and IPA2− ligands to generate a (4,4) two-dimensional layer. However, complex 2 features a 1D chain structure, which is further extended by O–H···O hydrogen bonding interactions into a 2D supramolecular layer with (63) topology. The fluorescence and thermal gravimetric analysis of both complexes were also explored. Furthermore, the complexes 1 and 2 exhibit remarkable catalytic properties for the degradation of methyl orange dyes in a Fenton-like process.
两种配位聚合物[Co(L1)(IPA] n (1)和[Ag(L2)(HMIPA)]-H2O} n (2)(H2IPA = 间苯二甲酸,L1 = 1,2-双(5,6-二甲基苯并咪唑-1-基甲基)苯,H2MIPA = ;和 5-甲基间苯二甲酸、L2 = 1,6-双(5,6-二甲基苯并咪唑-1-基)己烷的合成,并通过物理化学和光谱方法以及单晶 X 射线衍射进行了表征。在复合物 1 中,六配位钴中心通过 L1 和 IPA2- 配体桥接,生成了一个 (4,4) 二维层。然而,复合物 2 具有一维链结构,并通过 O-H-O 氢键相互作用进一步扩展成具有 (63) 拓扑结构的二维超分子层。研究人员还对这两种复合物进行了荧光和热重力分析。此外,复合物 1 和 2 在类似芬顿的降解甲基橙染料过程中表现出显著的催化特性。