个人信息Personal Information
教授
博士生导师
硕士生导师
性别:男
毕业院校:中科院金属所
学位:博士
所在单位:化工学院
学科:无机化学
办公地点:大连理工大学化学楼401
联系方式:13940825088
电子邮箱:cgmeng@dlut.edu.cn
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
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论文类型:期刊论文
发表时间:2013-01-01
发表刊物:INORGANICA CHIMICA ACTA
收录刊物:SCIE
卷号:394
页面范围:117-126
ISSN号:0020-1693
关键字:Supramolecular; Self-assembly; Carboxylate; Coordination polymer; Thermal stability
摘要:A series of rigid imidazolate/carboxylate functionalized ligands, X-(5,7-dioxopyrrolo[3,4-f]benzimidazole-6-yl)benzoic acid (X = 4, H(2)4-DPBB; X = 3, H(2)3-DPBB; X = 2, H(2)2-DPBB) were designed and used for the assemble reactions with Zn2+/Cd2+/Cu2+ ions. Four compounds, [Zn(4-DPBB)(H2O)] center dot DMSO center dot 0.5MeOH (1), [Cd(3-DPBB)(DMA)(1.8)(H2O)(0.2)] (2), [Cu(3-DPBB)(DMSO)(DMA)] (3) and [Cd(2-DPBB)(DMA)(2)] (4) have been 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 similar to 550 degrees C. Luminescent analysis indicates that 1 and 2 exhibit linker-localized emissions while 4 has ligand-to-metal charge transfer (LMCT) emission. The effect of the torsion of the ligands on the crystal structures and properties of the four compounds is discussed. (C) 2012 Elsevier B. V. All rights reserved.