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- Title
Direct‐Space Structure Determination of Covalent Organic Frameworks from 3D Electron Diffraction Data.
- Authors
Sun, Tu; Hughes, Colan E.; Guo, Linshuo; Wei, Lei; Harris, Kenneth D. M.; Zhang, Yue‐Biao; Ma, Yanhang
- Abstract
Structure determination of covalent organic frameworks (COFs) with atomic precision is a bottleneck that hinders the development of COF chemistry. Although three‐dimensional electron diffraction (3D‐ED) data has been used to solve structures of sub‐micrometer‐sized COFs, successful structure solution is not guaranteed as the data resolution is usually low. We demonstrate that the direct‐space strategy for structure solution, implemented using a genetic algorithm (GA), is a successful approach for structure determination of COF‐300 from 3D‐ED data. Structural models with different geometric constraints were considered in the GA calculations, with successful structure solution achieved from room‐temperature 3D‐ED data with a resolution as low as ca. 3.78 Å. The generality of this strategy was further verified for different phases of COF‐300. This study demonstrates a viable strategy for structure solution of COF materials from 3D‐ED data of limited resolution, which may facilitate the discovery of new COF materials in the future.
- Subjects
ELECTRON diffraction; GENETIC algorithms; STRUCTURAL models; CHEMICAL structure; GEOMETRIC modeling
- Publication
Angewandte Chemie, 2020, Vol 132, Issue 50, p22827
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.202009922