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Cercosporin-Photocatalyzed [4+1]- and [4+2]-Annulations of Azoalkenes Under Mild Conditions
Published on: July 17, 2020
4-Chloro-2-[(E)-(4-fluoro-phen-yl)imino-meth-yl]phenol
1College of Mathematics and Physics, Lanzhou Jiaotong University, Lanzhou 730070, People's Republic of China.
This study details the crystal structure of a Schiff base molecule (C13H9ClFNO). It reveals twisted benzene rings, intramolecular hydrogen bonding, and a 3D supramolecular structure formed by pi-pi stacking and other hydrogen bonds.
Area of Science:
- Crystal engineering
- Supramolecular chemistry
- Organic chemistry
Background:
- Schiff base molecules are versatile building blocks in supramolecular chemistry.
- Understanding intermolecular interactions is crucial for designing novel materials.
Purpose of the Study:
- To elucidate the crystal structure and supramolecular assembly of the Schiff base molecule C13H9ClFNO.
- To investigate the role of intra- and intermolecular interactions in stabilizing the crystal lattice.
Main Methods:
- Single-crystal X-ray diffraction analysis was employed.
- Analysis of hydrogen bonding and π-π stacking interactions was performed.
Main Results:
- The crystal structure exhibits a dihedral angle of 7.92° between benzene rings.
- An intramolecular O-H⋯N hydrogen bond was identified.
- π-π stacking interactions form infinite chains along the c-axis.
- A 3D supramolecular network is established via C-H⋯O and C-H⋯F hydrogen bonds.
Conclusions:
- The Schiff base molecule C13H9ClFNO self-assembles into a stable 3D supramolecular structure.
- Intermolecular interactions, including hydrogen bonding and π-π stacking, dictate the crystal packing.
- The findings contribute to the understanding of crystal engineering principles for Schiff base derivatives.
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