Anion-Directed Assemblies of Cationic Metal鈥揙rganic Frameworks Based on 4,4鈥?Bis(1,2,4-triazole): Syntheses, Structures, Luminescent and Anion Exchange Properties

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• 作者：Xinxiong Li ; Yaqiong Gong ; Huaixia Zhao ; Ruihu Wang
• 刊名：Inorganic Chemistry
• 出版年：2014
• 出版时间：November 17, 2014
• 年：2014
• 卷：53
• 期：22
• 页码：12127-12134
• 全文大小：677K
• ISSN：1520-510X

文摘

Three cationic metal鈥搊rganic frameworks (MOFs), Ag(btr)路PF₆路0.5CH₃CN (1), Ag₂(btr)₂(H₂O)路2CF₃SO₃路H₂O (2), and Ag₂(btr)₂(NO₃)路NO₃ (3), were prepared from reaction of 4,4鈥?bis(1,2,4-triazole) (btr) with silver salts containing different anions. Complex 1 is a three-dimensional (3-D) framework constructed from tetrahedral-shaped nanoscale coordination cages with PF₆^{鈥?/sup> as counteranions. 2 and 3 are 3-D architectures containing 1-D channels, in which charge-balancing CF₃SO₃鈥?/sup> and NO₃鈥?/sup> are located in their respective channels. Luminescent emission of 1鈥?b>3 shows an obvious red shift compared with the btr ligand. Anion exchange studies show that 1 is able to selectively exchange MnO₄鈥?/sup> in aqueous solution with a modest capacity of 0.56 mol mol鈥?; the luminescent emission of 1 is quickly quenched upon MnO₄鈥?/sup> exchange.}