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Updated: Jun 4, 2025

Author Spotlight: Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers
Published on: May 12, 2023
Porous Halogen-Bonded Frameworks Assembled through Hetero-polytopic Ion Pair Templation
Jordan N Smith1, Callum I Hunter1,2, Huan V Doan1
1Research School of Chemistry, Australian National University, Canberra, ACT, 2601, Australia.
Abstract:
Halogen-bonding (XB) interactions have been extensively studied in the preparation of crystalline frameworks, yet porous 3D framework materials built on XBs remain elusive. The donor-acceptor interactions are strengthened by use of anionic XB acceptors; however, the requisite charge-balancing cations typically disrupt the framework and occupy potential void space. In this work, we prepare a tetratopic XB donor bearing a crown ether moiety for sodium cation sequestration. We show that when this ionpair receptor is crystallised with NaCl it gives a 3D framework that is porous to solvent and vapour, and undergoes single-crystal-to-single-crystal reactions.
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