Dynamic and Solid-State Behaviour of Bromoisotrianglimine

Scholes, Abbie M.; Cook, Laurence J. Kershaw; Szczypiński, Filip T.; Luzyanin, Konstantin V.; Egleston, Benjamin D.; Greenaway, Rebecca L.; Slater, Anna G.

Abstract

Solid-state materials formed from discrete imine macrocycles have potential in industrial separations, but dynamic behaviour during both synthesis and crystallisation makes them challenging to exploit. Here, we explore opportunities for structural control by investigating the dynamic nature of a C-5 brominated isotrianglimine in solution and under crystallisation conditions. In solution, the equilibrium between the [3 + 3] and the less reported [2 + 2] macrocycle was investigated, and both macrocycles were fully characterised. Solvent templating during crystallisation was used to form new packing motifs for the [3 + 3] macrocycle and a previously unreported [4 + 4] macrocycle. Finally, chiral self-sorting was used to demonstrate how crystallisation conditions can not only influence packing arrangements but also shift the macrocycle equilibrium to yield new structures. This work thus exemplifies three strategies for exploiting dynamic behaviour to form isotrianglimine materials, and highlights the importance of understanding the dynamic behaviour of a system when designing and crystallising functional materials formed using dynamic covalent chemistry.

Citation

Scholes, A. M., Cook, L. J. K., Szczypiński, F. T., Luzyanin, K. V., Egleston, B. D., Greenaway, R. L., & Slater, A. G. (2024). Dynamic and Solid-State Behaviour of Bromoisotrianglimine. Chemical Science, 15(35), 14254-14263. https://doi.org/10.1039/D4SC04207G

• Journal Article Type: Article
• Acceptance Date: Jul 28, 2024
• Online Publication Date: Aug 13, 2024
• Publication Date: Sep 21, 2024
• Deposit Date: Feb 18, 2025
• Journal: Chemical Science
• Print ISSN: 2041-6520
• Electronic ISSN: 2041-6539
• Publisher: Royal Society of Chemistry
• Peer Reviewed: Peer Reviewed
• Volume: 15
• Issue: 35
• Pages: 14254-14263
• DOI: https://doi.org/10.1039/D4SC04207G
• Public URL: https://durham-repository.worktribe.com/output/3489148