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- Title
Cross-catenation between position-isomeric metallacages.
- Authors
Wang, Yiliang; Liu, Taotao; Zhang, Yang-Yang; Li, Bin; Tan, Liting; Li, Chunju; Shen, Xing-Can; Li, Jun
- Abstract
The study of cross-catenated metallacages, which are complex self-assembly systems arising from multiple supramolecular interactions and hierarchical assembly processes, is currently lacking but could provide facile insights into achieving more precise control over low-symmetry/high-complexity hierarchical assembly systems. Here, we report a cross-catenane formed between two position-isomeric Pt(II) metallacages in the solid state. These two metallacages formed [2]catenanes in solution, whereas a 1:1 mixture selectively formed a cross-catenane in crystals. Varied temperature nuclear magnetic resonance experiments and time-of-flight mass spectra are employed to characterize the cross-catenation in solutions, and the dynamic library of [2]catenanes are shown. Additionally, we searched for the global-minimum structures of three [2]catenanes and re-optimized the low-lying structures using density functional theory calculations. Our results suggest that the binding energy of cross-catenanes is significantly larger than that of self-catenanes within the dynamic library, and the selectivity in crystallization of cross-catenanes is thermodynamic. This study presents a cross-catenated assembly from different metallacages, which may provide a facile insight for the development of low-symmetry/high-complexity self-assemble systems. The study of cross-catenated metallacages could provide facile insights into achieving more precise control over low-symmetry/high-complexity hierarchical assembly systems but is currently lacking. Here, the authors report a cross-catenane formed between two position-isomeric Pt(II) metallacages in the solid state.
- Subjects
NUCLEAR magnetic resonance; DENSITY functional theory; BINDING energy; MASS spectrometry; CATENANES
- Publication
Nature Communications, 2024, Vol 15, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-024-45681-6