Zhu Minghui, Iwano Tsukasa, Tan Mengjin, Akutsu Daiki, Uchida Sayaka, Chen Guanying, Fang Xikui
MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, China.
Department of Basic Science, School of Arts and Sciences, The University of Tokyo, Tokyo, 153-8902, Japan.
Angew Chem Int Ed Engl. 2022 Apr 4;61(15):e202200666. doi: 10.1002/anie.202200666. Epub 2022 Feb 18.
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 {Mo Fe } macrocycle by using the Preyssler anion, [NaP W O ] ({P W }), as a supramolecular template. The {Mo Fe } macrocycle displays selective anion binding behavior in solution. In the solid state, the 1 : 2 host-guest complex, {P W } ⊂{Mo Fe }, 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.
大环化合物构建中阴离子模板策略的合理发展在历史上一直局限于小阴离子，但大的多金属氧酸盐可提供无与伦比的结构多样性和丰富的结合位点。在此，我们报道了以普列斯勒阴离子[NaP₂W₁₈O₆₂]⁵⁻（{P₂W₁₈}）作为超分子模板形成了一个{Mo₇Fe₃}大环。{Mo₇Fe₃}大环在溶液中表现出选择性阴离子结合行为。在固态下，1∶2主客体配合物{P₂W₁₈}⊂{Mo₇Fe₃}通过扩展的氢键网络比客体被完全包封的相关1∶1配合物更有效地传输质子。这些结果突出了这种阴离子模板方法在制备用于选择性阴离子识别和质子传导目的的大环体系方面的巨大潜力。
