Pseudo-5-fold-symmetrical ligand drives geometric frustration in porous metal-organic and hydrogen-bonded frameworks
Haase, Frederik and Craig, Gavin A. and Bonneau, Mickaële and Sugimoto, Kunihisa and Furukawa, Shuhei (2020) Pseudo-5-fold-symmetrical ligand drives geometric frustration in porous metal-organic and hydrogen-bonded frameworks. Journal of the American Chemical Society, 142 (32). pp. 13839-13845. ISSN 1520-5126 (https://doi.org/10.1021/jacs.0c04450)
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Abstract
Reticular framework materials thrive on designability, but unexpected reaction outcomes are crucial in exploring new structures and functionalities. By combining “incompatible” building blocks, we employed geometric frustration in reticular materials leading to emergent structural features. The combination of a pseudo-C5-symmetrical organic building unit based on a pyrrole core with a C4-symmetrical copper paddlewheel synthon led to three distinct frameworks by tuning the synthetic conditions. The frameworks show structural features typical for geometric frustration: self-limiting assembly, internally stressed equilibrium structures, and topological defects in the equilibrium structure, which manifested in formation of a hydrogen-bonded framework, distorted and broken secondary building units, and dangling functional groups, respectively. The influence of geometric frustration on the CO2 sorption behavior and the discovery of a new secondary building unit shows geometric frustration can serve as a strategy to obtain highly complex porous frameworks.
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Item type: Article ID code: 73704 Dates: DateEvent12 August 2020Published16 July 2020Published Online16 July 2020AcceptedSubjects: Science > Chemistry Department: Faculty of Science > Pure and Applied Chemistry Depositing user: Pure Administrator Date deposited: 24 Aug 2020 15:43 Last modified: 27 Nov 2024 09:24 URI: https://strathprints.strath.ac.uk/id/eprint/73704