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Updated: May 27, 2026

Facile Preparation of (2Z,4E)-Dienamides by the Olefination of Electron-deficient Alkenes with Allyl Acetate
Published on: June 21, 2017
2-[(E)-4-(Dimethyl-amino)-benzyl-idene]indan-1-one
This study details the crystal structure of a novel organic compound, C(18)H(17)NO. The research highlights the planar nature of its dihydro-indene and benzene rings and their intermolecular hydrogen bonding in the solid state.
Area of Science:
- Crystallography
- Organic Chemistry
- Materials Science
Background:
- Understanding the three-dimensional structure of organic molecules is crucial for predicting their properties and reactivity.
- Crystal engineering relies on characterizing intermolecular interactions to design materials with specific functions.
Purpose of the Study:
- To elucidate the crystal structure of the title compound, C(18)H(17)NO.
- To analyze the planarity of the fused ring system and the nature of intermolecular interactions in the solid state.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
- Analysis of bond lengths, bond angles, and intermolecular contacts was performed.
Main Results:
- The dihydro-indene ring system exhibits near planarity (maximum deviation of 0.041 Å).
- The dihydro-indene and benzene rings are nearly coplanar, with a small dihedral angle of 5.22°.
- Intermolecular C-H⋯O hydrogen bonds were identified, forming chains along the b axis in the crystal.
Conclusions:
- The title compound possesses a largely planar fused ring system.
- The crystal packing is influenced by specific intermolecular hydrogen bonding, leading to a chain-like structure.
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