Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 61, Issue 15, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202200666
Keywords
Host-Guest Complexes; Hydrogen Bonding; Macrocycles; Polyoxometalates; Proton Conduction
Categories
Funding
- National Natural Science Foundation of China [21671048, 51972084]
- Fundamental Research Fund for the Central Universities, China [AUGA5710094420]
- Heilongjiang Touyan Innovation Team Program
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In this study, we report a method of using Preyssler anion as a supramolecular template for constructing {Mo22Fe8} macrocycle. The macrocycle exhibits selective anion binding behavior in solution, and the 1:2 host-guest complex formed in the solid state can transport protons more effectively through an extended hydrogen-bonding network.
The rational development of an anion templation strategy for the construction of macrocycles has been historically limited to small anions, but large polyoxoanions can offer unmatched structural diversity and ample binding sites. Here we report the formation of a {Mo22Fe8} macrocycle by using the Preyssler anion, [NaP5W30O110](14-) ({P5W30}), as a supramolecular template. The {Mo22Fe8} macrocycle displays selective anion binding behavior in solution. In the solid state, the 1 : 2 host-guest complex, {P5W30}(2)subset of{Mo22Fe8}, transports protons more effectively, through an extended hydrogen-bonding network, than a related 1 : 1 complex where the guest is completely encapsulated. The results highlight the great potential this anion templation approach has in producing macrocyclic systems for selective anion recognition and proton conduction purposes.
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