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Published on: January 8, 2016
2,4-Dimeth-oxy-6-[(E)-2-(4-meth-oxy-phenyl)ethen-yl]benzaldehyde.
Xiao-Lin Ge1, Qiu-Xiang Guan, Sheng-Song Deng
1School of Medical Engineering, Hefei University of Technology, Hefei 230009, People's Repulic of China.
Summary
Two similar C18H18O4 molecules were identified in the crystal structure. These molecules form a layered arrangement through C-H⋯π interactions, influencing their overall conformation.
Area of Science:
- Crystallography
- Organic Chemistry
- Supramolecular Chemistry
Background:
- Understanding molecular conformation and crystal packing is crucial in solid-state chemistry.
- C-H⋯π interactions are increasingly recognized as important non-covalent forces in molecular self-assembly.
Purpose of the Study:
- To characterize the crystal structure of the title compound, C18H18O4.
- To investigate the conformational properties and intermolecular interactions within the crystal lattice.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
- Analysis of intermolecular contacts, including C-H⋯π interactions, was performed.
Main Results:
- Two conformationally similar molecules of C18H18O4 were found in the asymmetric unit.
- The dihedral angles between benzene rings were measured as 23.54(12)° and 31.11(12)°.
- C-H⋯π interactions with a minimum distance of 2.66 Å linked molecules into a layered structure.
Conclusions:
- The crystal structure reveals specific conformational preferences influenced by benzene ring orientations.
- C-H⋯π interactions play a significant role in directing the self-assembly of C18H18O4 into a layered architecture.
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