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论文类型：期刊论文

发表时间：2016-11-07

发表刊物：INORGANIC CHEMISTRY

收录刊物：SCIE、PubMed、Scopus

卷号：55

期号：21

页面范围：11593-11599

ISSN号：0020-1669

摘要：The synthesis of chiral zeolites remains a significant challenge because the primary tetrahedral building units are achiral and weak interactions exist between the guest and host frameworks. Here, we present the syntheses and characterization of three new chiral zeolitic halides, [H-3-(Dabco)(2)]Ag3X6 (X = Br (1) or I (2), Dabco = 1,4-diazabicyclo [2.2.2] octane) and [H-2(Dabco)] [(Dabco)Ag4I6] (3). Compounds 1 and 2 are isostructural, containing a 4-connected zeolitic framework built up from 3-ring units, with high-charge [H-3(Dabco)(2)](3+) located in chiral cages. compound 3 contains a similar zeolitic [Ag3I6](3-) framework to that of 2, but a [Ag(Dabco)](+) unit is incorporated in each 3-ring, with [H-2(Dabco)](2+) located in channels. These frameworks are chiral, representing the first examples of chiral zeolitic halides. The chirality transference of the frameworks for 1 and 2 was attributed to the template effect of the chiral [H-3(Dabco)(2)](3+) through strong electrostatic interactions and multiple hydrogen-bond interactions. For compound 3, direct coordination interactions play important roles in the chirality transference from the chiral Dabco ligand to the framework.