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. 2008;47(29):5434-7.
doi: 10.1002/anie.200801838.

Multiple functions of ionic liquids in the synthesis of three-dimensional low-connectivity homochiral and achiral frameworks

Jian Zhang  1 , Shumei Chen, Xianhui Bu
Affiliations

Multiple functions of ionic liquids in the synthesis of three-dimensional low-connectivity homochiral and achiral frameworks

Jian Zhang et al. Angew Chem Int Ed Engl. 2008.

Abstract

Multiple Functions of Ionic Liquids in the Synthesis of 3-D Low-Connectivity Homochiral and Achiral Frameworks Dilemma for the ionic liquid: now the ionic liquid faces three different choices: complete (cations and anions), partial (cations only), or no entrapment during the self-assembly of the 3-D homochiral or achiral low-connectivity framework.

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Figures

Figure 1
Figure 1
(Top) the basic 4-connected building block (a) and diamond-type framework filled by guest EMIm cations of ALF-1 (b); (bottom) the basic 3-connected building block (c) and ths-type framework filled by guest EMIm cations of ALF-4 (d).
Figure 2
Figure 2
Three different roles of the EMIm-Es ionic liquids. In (a) and (b), EMIm-Es serves as both solvent and cationic structure-directing agents, leading to 4-connected homochiral ALF-1 with the diamond-type net (shown here is the 6-membered ring.) and 3-connected homochiral ALF-4 with the ThSi-type net (shown here is the 10-membered ring.). In (c), EMIm-Es serves only as the solvent and tetrapropylammonium cations serve as the cationic structure directing agent, leading to the formation of homochiral ALF-2 with the diamond-type net (shown here is the 6- membered ring.). In (d), both cations and anions of EMIm-Es are trapped in the cavity of 4-connected framework with the CdSO4-type topology.
Scheme 1
Scheme 1
A comparison of the structural building blocks in zeolites (a) with those in this work (b), and two ionic liquids used for synthesis (c).
See this image and copyright information in PMC

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