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Updated: May 11, 2026
06:46
Facile Preparation of (2Z,4E)-Dienamides by the Olefination of Electron-deficient Alkenes with Allyl Acetate
Published on: June 21, 2017
(E)-3-(3,5-Dimeth-oxy-phen-yl)-1-(2-meth-oxy-phen-yl)prop-2-en-1-one
1Division of Bioscience and Biotechnology, BMIC, Konkuk University, Seoul 143-701, Republic of Korea.
Summary
This study details the molecular structure of C18H18O4, revealing a 52.52° dihedral angle between benzene rings and a trans conformation in the central enone group. Molecules form dimers via weak hydrogen bonds in the crystal structure.
Area of Science:
- Organic Chemistry
- Crystallography
Background:
- Understanding molecular geometry and intermolecular interactions is crucial in chemistry.
- The specific compound C18H18O4 has not been previously characterized in detail.
Purpose of the Study:
- To elucidate the three-dimensional structure of the molecule C18H18O4.
- To investigate the intermolecular interactions present in the crystalline state.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
- Analysis of bond lengths, bond angles, and dihedral angles provided geometric insights.
- Identification of hydrogen bonding networks was performed.
Main Results:
- The dihedral angle between the two benzene rings was determined to be 52.52(7)°.
- The central enone group exhibited a trans conformation with an s-transoid relative conformation of its double bonds.
- Weak C-H⋯O hydrogen bonds were observed, leading to the formation of inversion dimers in the crystal lattice.
Conclusions:
- The study provides a detailed structural characterization of C18H18O4.
- The observed hydrogen bonding pattern influences the packing and stability of the crystal structure.
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