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5-(Trifluoro-meth-oxy)isatin
M Schutte1, C Pretorius, H G Visser
1Department of Chemistry, University of the Free State, PO Box 339, Bloemfontein, 9301, South Africa.
Acta Crystallographica. Section E, Structure Reports Online
|March 12, 2013
Summary
This study details the crystal structure of 5-(trifluoro-methoxy)-1H-indole-2,3-dione. The compound forms layered structures through intermolecular hydrogen bonds and exhibits pi-pi stacking interactions.
Area of Science:
- Crystallography
- Organic Chemistry
- Materials Science
Background:
- Isatin derivatives are important scaffolds in medicinal chemistry.
- Understanding the solid-state structure of functionalized isatins is crucial for material design.
Purpose of the Study:
- To determine the crystal structure of 5-(trifluoro-methoxy)-1H-indole-2,3-dione.
- To investigate the intermolecular interactions governing its solid-state packing.
Main Methods:
- Single-crystal X-ray diffraction analysis.
- Analysis of intermolecular interactions including hydrogen bonding and pi-pi stacking.
Main Results:
- The compound crystallized with two molecules in the asymmetric unit.
- Intermolecular N-H⋯O hydrogen bonds form layers parallel to the ab plane.
- Pi-pi stacking interactions were observed with a centroid-centroid distance of 3.721 Å.
Conclusions:
- The crystal structure reveals a layered arrangement driven by hydrogen bonding.
- The near planarity of the isatin ring systems facilitates pi-pi stacking.
- This structural information is valuable for designing related organic materials.
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