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Structure of 2',6'-dihydroxy-4,4'-dimethoxychalcone.
H W Schmalle1, G Adiwidjaja, O H Jarchow
1Anorganisch-Chemisches Institut, Universität Zürich, Switzerland.
Acta Crystallographica. Section C, Crystal Structure Communications
|September 15, 1990
Summary
This study details the crystal structure of a chalcone derivative, revealing intramolecular hydrogen bonds and non-planar phenyl rings. Intermolecular hydrogen bonds form chains, influencing the compound's solid-state arrangement.
Area of Science:
- Crystallography
- Organic Chemistry
- Materials Science
Background:
- Chalcones are a class of natural products with diverse biological activities.
- Understanding the solid-state structure of chalcone derivatives is crucial for predicting their properties and designing new materials.
Purpose of the Study:
- To elucidate the crystal structure of 1-(2,6-Dihydroxy-4-methoxyphenyl)-3-(4-methoxyphenyl)-2-propen-1-one.
- To investigate the hydrogen bonding patterns and molecular conformation in the solid state.
Main Methods:
- Single-crystal X-ray diffraction analysis was performed.
- The crystal structure was solved and refined using collected diffraction data.
Main Results:
- The compound crystallizes in the orthorhombic P b c a space group.
- Two intramolecular hydrogen bonds (O-H...O and C-H...O) were identified, influencing molecular conformation.
- The molecule exhibits conjugation between aromatic rings and the enone system, with non-planar phenyl rings (13.1° dihedral angle).
- Intermolecular O-H...O hydrogen bonds link molecules into endless chains along the b-axis.
Conclusions:
- The detailed crystal structure provides insights into the intermolecular interactions governing the solid-state packing.
- The observed hydrogen bonding network and non-planar geometry are key features of this chalcone derivative.