Syntheses and characterization of four 2D metal–organic networks based on rigid imidazolate/carboxylate functionalized ligand – Effect of the torsion of the ligands on crystal structures and properties
作者:Jing-Si Yang、Jiang Zhu、Rui-Bin Liu、Jun Ni、Zhi-Duo Chang、Tao Hu、Jian-Jun Zhang、Chang-Gong Meng
DOI:10.1016/j.ica.2012.07.031
日期:2013.1
synthesized and structurally characterized (where DMSO = dimethylsulfoxide, DMA = dimethyl acetylamide). Single crystal X-ray analyses show that the four compounds are all based on 3-connected single metal nodes and 3-connected spacers. Compounds 1 and 2 bear a 2D (6, 3)-net structure, while 3 and 4 have a 2D (4, 8)-net. Compared with 2, 3 and 4, 1 exhibits a relatively high thermal stability which is up to ∼550 °C
摘要一系列刚性的咪唑/羧酸盐官能化配体,X-(5,7-二氧杂吡咯并[3,4-f]苯并咪唑-6-基)苯甲酸(X = 4,H24-DPBB; X = 3,H23-DPBB ; X = 2,H22-DPBB)被设计并用于与Zn2 + / Cd2 + / Cu2 +离子的组装反应。四种化合物,[Zn(4-DPBB)(H2O)]·DMSO·0.5MeOH(1),[Cd(3-DPBB)(DMA)1.8(H2O)0.2](2),[Cu(3-DPBB) (DMSO)(DMA)](3)和[Cd(2-DPBB)(DMA)2](4)已合成并进行了结构表征(其中DMSO =二甲基亚砜,DMA =二甲基乙酰酰胺)。单晶X射线分析表明,这四种化合物均基于3个连接的单个金属节点和3个连接的间隔基。化合物1和2具有2D(6,3)-net结构,而化合物3和4具有2D(4,8)-net结构。与2、3和4相比,1具有相对较高的