Two novel entangled metal-quinolone complexes with self-threading and polythreaded characters

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• 作者：Jiang-Hong He^a ; Dong-Rong Xiao^a ; ^{xiaodr98@yahoo.com.cn} ; Hai-Yan Chen^a ; Shi-Wei Yan^a ; Dian-Zhen Sun^a ; Xin Wang^a ; Juan Yang^a ; Ruo Yuan^a ; En-Bo Wang^b ;
• 关键词：Metal&ndash ; organic frameworks ; Entangled networks ; Hydrothermal synthesis ; Crystal structure
• 刊名：Inorganica Chimica Acta
• 出版年：2012
• 期刊代码：40_00201693
• 类别：ch
• 出版时间：30 April, 2012
• 卷：385
• 期：Complete
• 页码：170-177
• 文件大小：1662 K

摘要

Reactions of quinolones with metal salts in the presence of aromatic polycarboxylate ligands under hydrothermal conditions yield two novel entangled metal-quinolone complexes, namely [Cd₂(saraH)₂(bpdc)₂]路4.5H₂O (1) and [Mn(sara)₂]路2.5H₂O (2), (saraH = sarafloxacin, bpdc = 4,4鈥?biphenyldicarboxylate). Their structures were determined by single-crystal X-ray diffraction analyses and further characterized by elemental analyses, IR spectra, X-ray powder diffraction, and TG analyses. Compound 1 is an uncommon 2D self-threading network, which represents the first entangled network constructed from mixed sarafloxacin and dicarboxylate ligands. Compound 2 exhibits a novel (2D 鈫?#xA0;3D) polythreaded architecture that is constructed from 2D 4⁴-sql nets with side arms, which represents the first example of polythreaded metal-sarafloxacin complex. A comparison of the structures of 1 and 2 shows that the pH plays a crucial role in tuning the structures of the metal-quinolone complexes. Furthermore, the luminescent properties of compound 1 are discussed.