New two-dimensional metal-organic frameworks constructed from 1H-benzimidazole-5,6-dicarboxylic acid with luminescent studies

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• 作者：Wei Wang^a ; ^b ; Jia-Yin Sun^a ; Dao-Jun Zhang^c ; Tian-You Song^a ; Wei Song^a ; Li-Ying Zhang^a ; Yan-Li Chen^a ; Yong Fan^a ; ^{mrfy@jlu.edu.cn} ; Ping Zhang^a ;
• 关键词：Lead/cadmium&ndash ; organic framework ; 1H-Benzimidazole-5 ; 6-dicarboxylic acid ; Crystal structure ; Luminescent properties
• 刊名：Inorganica Chimica Acta
• 出版年：2012
• 期刊代码：40_00201693
• 类别：ch
• 出版时间：1 April, 2012
• 卷：384
• 期：Complete
• 页码：105-110
• 文件大小：1156 K

摘要

New two-dimensional metal-organic frameworks [Pb(Hbidc)]_n (rong class="boldFont">1rong>) and [Cd(Hbidc)]_n (rong class="boldFont">2rong>), constructed from multidentate ligand 1H-benzimidazole-5,6-dicarboxylic acid (Hbidc), have been synthesized under hydro/solvothermal conditions and fully characterized. Compound rong class="boldFont">1rong> is the first lead-organic framework based on Hbidc, and displays a 5-connected rong class="boldFont">SnSrong> network which contains 2D [Pb(CO₂)]_n layers. The Hbidc ligand exhibits a novel coordination mode (渭₅:畏²:畏²:畏²:畏¹), which is reported for the first time in M-bidc frameworks. Compound rong class="boldFont">2rong> has a two-dimensional layer structure constructed of rod-shaped building blocks. Both the two 2D compounds are further assembled by hydrogen bonds and 蟺-蟺 stacking interactions into 3D supramolecular networks. Luminescent studies show that the title compounds exhibit different fluorescence emission activity at room temperature in the solid state.