Templation and Concentration Drive Conversion between a FeII12L12Pseudoicosahedron, a FeII4L4Tetrahedron, and a FeII2L3Helicate
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We report the construction of three structurally distinct self-assembled architectures: FeII12L12 pseudoicosahedron 1, FeII2L3 helicate 2, and FeII4L4 tetrahedron 3, formed from a single triazatriangulenium subcomponent A under different reaction conditions. Pseudoicosahedral capsule 1 is the largest formed through subcomponent self-assembly to date, with an outer-sphere diameter of 5.4 nm and a cavity volume of 15 nm3. The outcome of self-assembly depended upon concentration, where the formation of pseudoicosahedron 1 was favored at higher concentrations, while helicate 2 exclusively formed at lower concentrations. The conversion of pseudoicosahedron 1 or helicate 2 into tetrahedron 3 occurred following the addition of a CB11H12- or B12F122- template.
|Tidsskrift||Journal of the American Chemical Society|
|Status||Udgivet - 2022|
This work was supported by the European Research Council (695009) and the UK Engineering and Physical Sciences Research Council (EPSRC EP/P027067/1). The authors thank the Department of Chemistry NMR facility, University of Cambridge, for performing some NMR experiments and Diamond Light Source (UK) for synchrotron beamtime on I19 (CY21497). D.Z. acknowledges a Herchel Smith Research Fellowship from the University of Cambridge. Z.L. thanks the Cambridge Trust and the Chinese Scholarship Council for Ph.D. funding.