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2',3,4,4',5-Penta-meth-oxy-chalcone.

Johannes H van Tonder1, Theunis J Muller, Barend C B Bezuidenhoudt

  • 1Department of Chemistry, University of the Free State, PO Box 339, Bloemfontein, 9300, South Africa.

Acta Crystallographica. Section E, Structure Reports Online
|May 19, 2011
PubMed
Summary
This summary is machine-generated.

This study details the molecular structure of a specific chalcone derivative. The research reveals a near-planar arrangement of its benzene rings and methoxy groups, stabilized by intramolecular and intermolecular interactions.

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Area of Science:

  • Organic Chemistry
  • Crystallography
  • Molecular Structure

Background:

  • Chalcones are a class of natural products with diverse biological activities.
  • Understanding the precise three-dimensional structure of chalcones is crucial for structure-activity relationship studies.

Purpose of the Study:

  • To elucidate the crystal structure and molecular geometry of the title chalcone (1-(2,4-dimethoxy-phenyl)-3-(3,4,5-trimethoxy-phenyl)prop-2-en-1-one).
  • To investigate the conformational preferences of the methoxy groups and the orientation of the aromatic rings.

Main Methods:

  • Single-crystal X-ray diffraction analysis was employed to determine the molecular structure.
  • Analysis of bond lengths, bond angles, and torsion angles provided insights into the molecular geometry.

Main Results:

  • The dihedral angle between the two benzene rings was found to be 7.03(4)°, indicating a nearly planar conformation.
  • All but one methoxy group were observed to be co-planar with their respective benzene rings.
  • An intramolecular C-H⋯O interaction was identified within the molecule.
  • Crystal packing is characterized by weak intermolecular C-H⋯O hydrogen bonds.

Conclusions:

  • The study provides a detailed structural characterization of the title chalcone.
  • The observed molecular conformation and intermolecular interactions offer insights into the solid-state behavior of this chalcone derivative.